diff --git a/src/include/switch_core_db.h b/src/include/switch_core_db.h
index 3e92e2bdac..f72c3c5f45 100644
--- a/src/include/switch_core_db.h
+++ b/src/include/switch_core_db.h
@@ -540,7 +540,7 @@ SWITCH_DECLARE(int) switch_core_db_changes(switch_core_db_t *db);
  * literal.
  */
 
-SWITCH_DECLARE(char*)switch_sql_concat();
+SWITCH_DECLARE(char*)switch_sql_concat(void);
 
 SWITCH_END_EXTERN_C
 #endif
diff --git a/src/switch_core_sqldb.c b/src/switch_core_sqldb.c
index 60e6c4743b..db2cf72c15 100644
--- a/src/switch_core_sqldb.c
+++ b/src/switch_core_sqldb.c
@@ -2114,7 +2114,7 @@ SWITCH_DECLARE(void) switch_cache_db_status(switch_stream_handle_t *stream)
 	switch_mutex_unlock(sql_manager.dbh_mutex);
 }
 
-SWITCH_DECLARE(char*)switch_sql_concat()
+SWITCH_DECLARE(char*)switch_sql_concat(void)
 {
 	if(runtime.odbc_dbtype == DBTYPE_MSSQL)
 		return "+";