diff --git a/lib/config/vmops.hpp b/lib/config/vmops.hpp
index 2642381a4..96449c9c1 100644
--- a/lib/config/vmops.hpp
+++ b/lib/config/vmops.hpp
@@ -129,7 +129,7 @@ public:
 		return Empty;
 	}
 
-	static inline Value For(ScriptFrame& frame, const String& fkvar, const String& fvvar, const Value& value, Expression *expression, const DebugInfo& debugInfo = DebugInfo())
+	static inline ExpressionResult For(ScriptFrame& frame, const String& fkvar, const String& fvvar, const Value& value, Expression *expression, const DebugInfo& debugInfo = DebugInfo())
 	{
 		if (value.IsObjectType<Array>()) {
 			if (!fvvar.IsEmpty())