diff --git a/src/TLuaEngine.cpp b/src/TLuaEngine.cpp
index 5091a40..9810c99 100644
--- a/src/TLuaEngine.cpp
+++ b/src/TLuaEngine.cpp
@@ -40,7 +40,9 @@ TLuaEngine* LuaAPI::MP::Engine;
 
 static sol::protected_function AddTraceback(sol::state_view StateView, sol::protected_function RawFn);
 
-std::optional<sol::function> GetLuaHandler(sol::state_view StateView, const std::string Handler, const std::string EventName) {
+static std::optional<sol::function> GetLuaHandler(sol::state_view StateView, const std::string Handler, const std::string EventName);
+
+static std::optional<sol::function> GetLuaHandler(sol::state_view StateView, const std::string Handler, const std::string EventName) {
     auto Res = StateView.safe_script("return " + Handler, sol::script_pass_on_error);
     if (!Res.valid()) {
         beammp_errorf("invalid handler for event \"{}\". handler: \"{}\"", EventName, Handler);