diff --git a/src/common/scripting/interface/vmnatives.cpp b/src/common/scripting/interface/vmnatives.cpp
index 1b2b749aae..e7b51d0631 100644
--- a/src/common/scripting/interface/vmnatives.cpp
+++ b/src/common/scripting/interface/vmnatives.cpp
@@ -1035,6 +1035,7 @@ DEFINE_ACTION_FUNCTION(_CVar, FindCVar)
 
 DEFINE_ACTION_FUNCTION(_CVar, SaveConfig)
 {
+	PARAM_PROLOGUE;
 	ACTION_RETURN_BOOL(M_SaveDefaults(nullptr));
 }