diff --git a/src/plugins/api.c b/src/plugins/api.c
index d3f159b0..711bc02b 100644
--- a/src/plugins/api.c
+++ b/src/plugins/api.c
@@ -155,7 +155,7 @@ api_register_timed(void *callback, int interval_seconds,
 }
 
 void
-api_register_ac(const char *key, char **items)
+api_completer_add(const char *key, char **items)
 {
     autocompleters_add(key, items);
 }
diff --git a/src/plugins/api.h b/src/plugins/api.h
index 531eddd7..357d506e 100644
--- a/src/plugins/api.h
+++ b/src/plugins/api.h
@@ -53,7 +53,8 @@ void api_register_command(const char *command_name, int min_args, int max_args,
     void *callback, void(*callback_func)(PluginCommand *command, gchar **args));
 void api_register_timed(void *callback, int interval_seconds,
     void (*callback_func)(PluginTimedFunction *timed_function));
-void api_register_ac(const char *key, char **items);
+
+void api_completer_add(const char *key, char **items);
 
 void api_log_debug(const char *message);
 void api_log_info(const char *message);
diff --git a/src/plugins/c_api.c b/src/plugins/c_api.c
index c860be42..32369523 100644
--- a/src/plugins/c_api.c
+++ b/src/plugins/c_api.c
@@ -97,9 +97,9 @@ c_api_register_timed(void(*callback)(void), int interval_seconds)
 }
 
 static void
-c_api_register_ac(const char *key, char **items)
+c_api_completer_add(const char *key, char **items)
 {
-    api_register_ac(key, items);
+    api_completer_add(key, items);
 }
 
 static void
@@ -269,7 +269,7 @@ c_api_init(void)
     prof_cons_bad_cmd_usage = c_api_cons_bad_cmd_usage;
     prof_register_command = c_api_register_command;
     prof_register_timed = c_api_register_timed;
-    prof_register_ac = c_api_register_ac;
+    prof_completer_add = c_api_completer_add;
     prof_notify = c_api_notify;
     prof_send_line = c_api_send_line;
     prof_get_current_recipient = c_api_get_current_recipient;
diff --git a/src/plugins/profapi.c b/src/plugins/profapi.c
index 372db3b1..3d92fb23 100644
--- a/src/plugins/profapi.c
+++ b/src/plugins/profapi.c
@@ -48,7 +48,7 @@ void (*prof_register_command)(const char *command_name, int min_args, int max_ar
 
 void (*prof_register_timed)(void(*callback)(void), int interval_seconds) = NULL;
 
-void (*prof_register_ac)(const char *key, char **items) = NULL;
+void (*prof_completer_add)(const char *key, char **items) = NULL;
 
 void (*prof_notify)(const char *message, int timeout_ms, const char *category) = NULL;
 
diff --git a/src/plugins/profapi.h b/src/plugins/profapi.h
index c6f54d88..61d41cfc 100644
--- a/src/plugins/profapi.h
+++ b/src/plugins/profapi.h
@@ -48,7 +48,7 @@ void (*prof_register_command)(const char *command_name, int min_args, int max_ar
 
 void (*prof_register_timed)(void(*callback)(void), int interval_seconds);
 
-void (*prof_register_ac)(const char *key, char **items);
+void (*prof_completer_add)(const char *key, char **items);
 
 void (*prof_notify)(const char *message, int timeout_ms, const char *category);
 
diff --git a/src/plugins/python_api.c b/src/plugins/python_api.c
index e830be29..9cac70ae 100644
--- a/src/plugins/python_api.c
+++ b/src/plugins/python_api.c
@@ -186,7 +186,7 @@ python_api_register_timed(PyObject *self, PyObject *args)
 }
 
 static PyObject *
-python_api_register_ac(PyObject *self, PyObject *args)
+python_api_completer_add(PyObject *self, PyObject *args)
 {
     const char *key = NULL;
     PyObject *items = NULL;
@@ -663,7 +663,7 @@ static PyMethodDef apiMethods[] = {
     { "cons_bad_cmd_usage", python_api_cons_bad_cmd_usage, METH_VARARGS, "Show invalid command message in console" },
     { "register_command", python_api_register_command, METH_VARARGS, "Register a command." },
     { "register_timed", python_api_register_timed, METH_VARARGS, "Register a timed function." },
-    { "register_ac", python_api_register_ac, METH_VARARGS, "Register an autocompleter." },
+    { "completer_add", python_api_completer_add, METH_VARARGS, "Add items to an autocompleter." },
     { "send_line", python_api_send_line, METH_VARARGS, "Send a line of input." },
     { "notify", python_api_notify, METH_VARARGS, "Send desktop notification." },
     { "get_current_recipient", python_api_get_current_recipient, METH_VARARGS, "Return the jid of the recipient of the current window." },