diff --git a/tests/manual/debugger/simple/simple_test_plugin.cpp b/tests/manual/debugger/simple/simple_test_plugin.cpp
index b4862208a05..e5115f7c1f6 100644
--- a/tests/manual/debugger/simple/simple_test_plugin.cpp
+++ b/tests/manual/debugger/simple/simple_test_plugin.cpp
@@ -9,6 +9,7 @@ public:
     Something() {
         int i = 0;
         ++i;
+        Q_UNUSED(i)
         return;
     }
 };