diff --git a/Source/Core/InputCommon/Src/ControllerInterface/ExpressionParser.cpp b/Source/Core/InputCommon/Src/ControllerInterface/ExpressionParser.cpp
index d91fbc587c..1186551bf6 100644
--- a/Source/Core/InputCommon/Src/ControllerInterface/ExpressionParser.cpp
+++ b/Source/Core/InputCommon/Src/ControllerInterface/ExpressionParser.cpp
@@ -549,7 +549,10 @@ ExpressionParseStatus ParseExpressionInner(std::string str, ControlFinder &finde
 	Parser p(tokens, finder);
 	status = p.Parse(&expr);
 	if (status != EXPRESSION_PARSE_SUCCESS)
+	{
+		delete expr;
 		return status;
+	}
 
 	*expr_out = expr;
 	return EXPRESSION_PARSE_SUCCESS;