diff --git a/src/command/cmd_ac.c b/src/command/cmd_ac.c
index afc642e4..6cb7b1a1 100644
--- a/src/command/cmd_ac.c
+++ b/src/command/cmd_ac.c
@@ -2640,9 +2640,9 @@ _join_autocomplete(ProfWin *window, const char *const input)
 
     if (result) {
         gboolean space_at_end = g_str_has_suffix(input, " ");
-        GString *beginning = g_string_new("/join");
         int num_args = g_strv_length(args);
         if ((num_args == 1 && space_at_end) || (num_args == 2 && !space_at_end)) {
+            GString *beginning = g_string_new("/join");
             g_string_append_printf(beginning, " %s", args[0]);
             found = autocomplete_param_with_ac(input, beginning->str, join_property_ac, TRUE);
             g_string_free(beginning, TRUE);
@@ -2652,6 +2652,7 @@ _join_autocomplete(ProfWin *window, const char *const input)
             }
         }
         if ((num_args == 3 && space_at_end) || (num_args == 4 && !space_at_end)) {
+            GString *beginning = g_string_new("/join");
             g_string_append_printf(beginning, " %s %s %s", args[0], args[1], args[2]);
             found = autocomplete_param_with_ac(input, beginning->str, join_property_ac, TRUE);
             g_string_free(beginning, TRUE);
diff --git a/src/log.c b/src/log.c
index 2c1bf7bc..e091f347 100644
--- a/src/log.c
+++ b/src/log.c
@@ -403,7 +403,7 @@ _chat_log_chat(const char *const login, const char *const other, const char *con
 void
 groupchat_log_chat(const gchar *const login, const gchar *const room, const gchar *const nick, const gchar *const msg)
 {
-    gchar *room_copy = strdup(room);
+    char *room_copy = strdup(room);
     struct dated_chat_log *dated_log = g_hash_table_lookup(groupchat_logs, room_copy);
 
     // no log for room
@@ -416,6 +416,7 @@ groupchat_log_chat(const gchar *const login, const gchar *const room, const gcha
         dated_log = _create_groupchat_log(room_copy, login);
         g_hash_table_replace(logs, room_copy, dated_log);
     }
+    free(room_copy);
 
     GDateTime *dt = g_date_time_new_now_local();
 
diff --git a/src/plugins/callbacks.c b/src/plugins/callbacks.c
index 40a35400..364cb669 100644
--- a/src/plugins/callbacks.c
+++ b/src/plugins/callbacks.c
@@ -299,6 +299,7 @@ plugins_run_command(const char * const input)
         curr_hash = g_list_next(curr_hash);
     }
 
+    g_list_free(command_hashes);
     g_strfreev(split);
     return FALSE;
 }
diff --git a/src/plugins/python_api.c b/src/plugins/python_api.c
index 8309e5ec..ee8a874c 100644
--- a/src/plugins/python_api.c
+++ b/src/plugins/python_api.c
@@ -740,7 +740,9 @@ python_api_settings_get_string(PyObject *self, PyObject *args)
     disable_python_threads();
 
     if (res) {
-        return Py_BuildValue("s", res);
+        PyObject *pyres = Py_BuildValue("s", res);
+        free(res);
+        return pyres;
     } else {
         Py_RETURN_NONE;
     }
diff --git a/src/plugins/python_plugins.c b/src/plugins/python_plugins.c
index 16c64fab..988437f5 100644
--- a/src/plugins/python_plugins.c
+++ b/src/plugins/python_plugins.c
@@ -172,6 +172,7 @@ python_init_hook(ProfPlugin *plugin, const char *const version, const char *cons
             Py_XDECREF(p_function);
         }
     }
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -189,6 +190,7 @@ python_on_start_hook(ProfPlugin *plugin)
             PyObject_CallObject(p_function, NULL);
             python_check_error();
             Py_XDECREF(p_function);
+
         }
     }
     allow_python_threads();
@@ -249,6 +251,7 @@ python_on_connect_hook(ProfPlugin *plugin, const char *const account_name, const
             Py_XDECREF(p_function);
         }
     }
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -269,6 +272,7 @@ python_on_disconnect_hook(ProfPlugin *plugin, const char *const account_name, co
             Py_XDECREF(p_function);
         }
     }
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -287,13 +291,14 @@ python_pre_chat_message_display_hook(ProfPlugin *plugin, const char *const jid,
             PyObject *result = PyObject_CallObject(p_function, p_args);
             python_check_error();
             Py_XDECREF(p_function);
+            Py_XDECREF(p_args);
             char *result_str = python_str_or_unicode_to_string(result);
             allow_python_threads();
 
             return result_str;
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
     return NULL;
 }
@@ -315,7 +320,7 @@ python_post_chat_message_display_hook(ProfPlugin *plugin, const char *const jid,
             Py_XDECREF(p_function);
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -334,13 +339,14 @@ python_pre_chat_message_send_hook(ProfPlugin *plugin, const char * const jid, co
             PyObject *result = PyObject_CallObject(p_function, p_args);
             python_check_error();
             Py_XDECREF(p_function);
+            Py_XDECREF(p_args);
             char *result_str = python_str_or_unicode_to_string(result);
             allow_python_threads();
 
             return result_str;
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
     return NULL;
 }
@@ -362,7 +368,7 @@ python_post_chat_message_send_hook(ProfPlugin *plugin, const char *const jid, co
             Py_XDECREF(p_function);
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -381,13 +387,14 @@ python_pre_room_message_display_hook(ProfPlugin *plugin, const char * const room
             PyObject *result = PyObject_CallObject(p_function, p_args);
             python_check_error();
             Py_XDECREF(p_function);
+            Py_XDECREF(p_args);
             char *result_str = python_str_or_unicode_to_string(result);
             allow_python_threads();
 
             return result_str;
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
     return NULL;
 }
@@ -410,7 +417,7 @@ python_post_room_message_display_hook(ProfPlugin *plugin, const char *const room
             Py_XDECREF(p_function);
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -429,13 +436,14 @@ python_pre_room_message_send_hook(ProfPlugin *plugin, const char *const room, co
             PyObject *result = PyObject_CallObject(p_function, p_args);
             python_check_error();
             Py_XDECREF(p_function);
+            Py_XDECREF(p_args);
             char *result_str = python_str_or_unicode_to_string(result);
             allow_python_threads();
 
             return result_str;
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
     return NULL;
 }
@@ -457,7 +465,7 @@ python_post_room_message_send_hook(ProfPlugin *plugin, const char *const room, c
             Py_XDECREF(p_function);
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -479,7 +487,7 @@ python_on_room_history_message_hook(ProfPlugin *plugin, const char *const room,
             Py_XDECREF(p_function);
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -499,13 +507,14 @@ python_pre_priv_message_display_hook(ProfPlugin *plugin, const char *const room,
             PyObject *result = PyObject_CallObject(p_function, p_args);
             python_check_error();
             Py_XDECREF(p_function);
+            Py_XDECREF(p_args);
             char *result_str = python_str_or_unicode_to_string(result);
             allow_python_threads();
 
             return result_str;
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
     return NULL;
 }
@@ -528,7 +537,7 @@ python_post_priv_message_display_hook(ProfPlugin *plugin, const char *const room
             Py_XDECREF(p_function);
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -548,13 +557,14 @@ python_pre_priv_message_send_hook(ProfPlugin *plugin, const char *const room, co
             PyObject *result = PyObject_CallObject(p_function, p_args);
             python_check_error();
             Py_XDECREF(p_function);
+            Py_XDECREF(p_args);
             char *result_str = python_str_or_unicode_to_string(result);
             allow_python_threads();
 
             return result_str;
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
     return NULL;
 }
@@ -577,7 +587,7 @@ python_post_priv_message_send_hook(ProfPlugin *plugin, const char *const room, c
             Py_XDECREF(p_function);
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -596,13 +606,14 @@ python_on_message_stanza_send_hook(ProfPlugin *plugin, const char *const text)
             PyObject *result = PyObject_CallObject(p_function, p_args);
             python_check_error();
             Py_XDECREF(p_function);
+            Py_XDECREF(p_args);
             char *result_str = python_str_or_unicode_to_string(result);
             allow_python_threads();
 
             return result_str;
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
     return NULL;
 }
@@ -622,6 +633,7 @@ python_on_message_stanza_receive_hook(ProfPlugin *plugin, const char *const text
             PyObject *result = PyObject_CallObject(p_function, p_args);
             python_check_error();
             Py_XDECREF(p_function);
+            Py_XDECREF(p_args);
             if (PyObject_IsTrue(result)) {
                 allow_python_threads();
                 return TRUE;
@@ -631,7 +643,7 @@ python_on_message_stanza_receive_hook(ProfPlugin *plugin, const char *const text
             }
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
     return TRUE;
 }
@@ -651,13 +663,14 @@ python_on_presence_stanza_send_hook(ProfPlugin *plugin, const char *const text)
             PyObject *result = PyObject_CallObject(p_function, p_args);
             python_check_error();
             Py_XDECREF(p_function);
+            Py_XDECREF(p_args);
             char *result_str = python_str_or_unicode_to_string(result);
             allow_python_threads();
 
             return result_str;
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
     return NULL;
 }
@@ -677,6 +690,7 @@ python_on_presence_stanza_receive_hook(ProfPlugin *plugin, const char *const tex
             PyObject *result = PyObject_CallObject(p_function, p_args);
             python_check_error();
             Py_XDECREF(p_function);
+            Py_XDECREF(p_args);
             if (PyObject_IsTrue(result)) {
                 allow_python_threads();
                 return TRUE;
@@ -686,7 +700,7 @@ python_on_presence_stanza_receive_hook(ProfPlugin *plugin, const char *const tex
             }
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
     return TRUE;
 }
@@ -706,13 +720,14 @@ python_on_iq_stanza_send_hook(ProfPlugin *plugin, const char *const text)
             PyObject *result = PyObject_CallObject(p_function, p_args);
             python_check_error();
             Py_XDECREF(p_function);
+            Py_XDECREF(p_args);
             char *result_str = python_str_or_unicode_to_string(result);
             allow_python_threads();
 
             return result_str;
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
     return NULL;
 }
@@ -732,6 +747,7 @@ python_on_iq_stanza_receive_hook(ProfPlugin *plugin, const char *const text)
             PyObject *result = PyObject_CallObject(p_function, p_args);
             python_check_error();
             Py_XDECREF(p_function);
+            Py_XDECREF(p_args);
             if (PyObject_IsTrue(result)) {
                 allow_python_threads();
                 return TRUE;
@@ -741,7 +757,7 @@ python_on_iq_stanza_receive_hook(ProfPlugin *plugin, const char *const text)
             }
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
     return TRUE;
 }
@@ -764,7 +780,7 @@ python_on_contact_offline_hook(ProfPlugin *plugin, const char *const barejid, co
             Py_XDECREF(p_function);
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -786,7 +802,7 @@ python_on_contact_presence_hook(ProfPlugin *plugin, const char *const barejid, c
             Py_XDECREF(p_function);
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -807,7 +823,7 @@ python_on_chat_win_focus_hook(ProfPlugin *plugin, const char *const barejid)
             Py_XDECREF(p_function);
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
 }
 
@@ -828,7 +844,7 @@ python_on_room_win_focus_hook(ProfPlugin *plugin, const char *const roomjid)
             Py_XDECREF(p_function);
         }
     }
-
+    Py_XDECREF(p_args);
     allow_python_threads();
 }