diff --git a/src/config/preferences.c b/src/config/preferences.c
index fdd18ea0..589a6c92 100644
--- a/src/config/preferences.c
+++ b/src/config/preferences.c
@@ -80,7 +80,7 @@ static const char* _get_key(preference_t pref);
 static gboolean _get_default_boolean(preference_t pref);
 static char* _get_default_string(preference_t pref);
 
-void _prefs_load(void)
+static void _prefs_load(void)
 {
     GError *err = NULL;
     log_maxsize = g_key_file_get_integer(prefs, PREF_GROUP_LOGGING, "maxsize", &err);
@@ -166,9 +166,23 @@ void _prefs_load(void)
     g_strfreev(triggers);
 }
 
+/* Clean up after _prefs_load() */
+static void _prefs_close(void)
+{
+    autocomplete_free(boolean_choice_ac);
+    autocomplete_free(room_trigger_ac);
+}
+
 void
 prefs_reload(void)
 {
+    /*
+     * Current function contains copy-paste, but we wanted to avoid config_file
+     * manipulation from prefs_load/prefs_close
+     */
+
+    _prefs_close();
+
     g_key_file_free(prefs);
     prefs = NULL;
 
@@ -185,7 +199,7 @@ prefs_load(char *config_file)
     if (config_file == NULL) {
         prefs_loc = files_get_config_path(FILE_PROFRC);
     } else {
-        prefs_loc = config_file;
+        prefs_loc = strdup(config_file);
     }
 
     if (g_file_test(prefs_loc, G_FILE_TEST_EXISTS)) {
@@ -207,8 +221,7 @@ prefs_save(void)
 void
 prefs_close(void)
 {
-    autocomplete_free(boolean_choice_ac);
-    autocomplete_free(room_trigger_ac);
+    _prefs_close();
 
     g_key_file_free(prefs);
     prefs = NULL;
diff --git a/src/main.c b/src/main.c
index 33367743..99ccfbc0 100644
--- a/src/main.c
+++ b/src/main.c
@@ -60,7 +60,7 @@
 #include "command/cmd_defs.h"
 
 static gboolean version = FALSE;
-static char *log = "INFO";
+static char *log = NULL;
 static char *log_file = NULL;
 static char *account_name = NULL;
 static char *config_file = NULL;
@@ -175,7 +175,17 @@ main(int argc, char **argv)
         return 0;
     }
 
-    prof_run(log, account_name, config_file, log_file);
+    prof_run(log ? log : "INFO", account_name, config_file, log_file);
+
+    /* Free resources allocated by GOptionContext */
+    if (log)
+        g_free(log);
+    if (account_name)
+        g_free(account_name);
+    if (config_file)
+        g_free(config_file);
+    if (log_file)
+        g_free(log_file);
 
     return 0;
 }
diff --git a/src/xmpp/iq.c b/src/xmpp/iq.c
index 3104aa6c..02f59b3f 100644
--- a/src/xmpp/iq.c
+++ b/src/xmpp/iq.c
@@ -252,6 +252,7 @@ iq_handlers_clear()
 {
     if (id_handlers) {
         g_hash_table_remove_all(id_handlers);
+        g_hash_table_destroy(id_handlers);
         id_handlers = NULL;
     }
 }
@@ -340,6 +341,7 @@ iq_rooms_cache_clear(void)
 {
     if (rooms_cache) {
         g_hash_table_remove_all(rooms_cache);
+        g_hash_table_destroy(rooms_cache);
         rooms_cache = NULL;
     }
 }