diff --git a/src/mod/applications/mod_commands/mod_commands.c b/src/mod/applications/mod_commands/mod_commands.c
index 1f4473f9df..38e5452de7 100644
--- a/src/mod/applications/mod_commands/mod_commands.c
+++ b/src/mod/applications/mod_commands/mod_commands.c
@@ -2811,7 +2811,7 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_commands_load)
 	SWITCH_ADD_API(commands_api_interface, "url_encode", "url encode a string", url_encode_function, "<string>");
 	SWITCH_ADD_API(commands_api_interface, "url_decode", "url decode a string", url_decode_function, "<string>");
 	SWITCH_ADD_API(commands_api_interface, "module_exists", "check if module exists", module_exists_function, "<module>");
-	SWITCH_ADD_API(commands_api_interface, "domain_exists", "check if a domain exists", domain_exists_function, "<module>");
+	SWITCH_ADD_API(commands_api_interface, "domain_exists", "check if a domain exists", domain_exists_function, "<domain>");
 	SWITCH_ADD_API(commands_api_interface, "uuid_send_dtmf", "send dtmf digits", uuid_send_dtmf_function, UUID_SEND_DTMF_SYNTAX);
 	SWITCH_ADD_API(commands_api_interface, "eval", "eval (noop)", eval_function, "<expression>");
 	SWITCH_ADD_API(commands_api_interface, "system", "Execute a system command", system_function, SYSTEM_SYNTAX);