diff --git a/src/lua_rds.h b/src/lua_rds.h
index 5fc8c23..0ad5923 100644
--- a/src/lua_rds.h
+++ b/src/lua_rds.h
@@ -9,6 +9,7 @@
 void init_lua(RDSModulator* rds_mod);
 void run_lua(char *str, char *cmd_output);
 int lua_group(RDSGroup* group, const char grp);
+void lua_call_function_nolock(const char* function);
 void lua_call_function(const char* function);
 void lua_group_ref(RDSGroup* group, int ref);
 void destroy_lua();
\ No newline at end of file