diff --git a/kstyle/breezehelper.cpp b/kstyle/breezehelper.cpp
index 0c7ce686..b21eade8 100644
--- a/kstyle/breezehelper.cpp
+++ b/kstyle/breezehelper.cpp
@@ -1358,6 +1358,7 @@ namespace Breeze
         #if QT_VERSION >= 0x050300
         return pixmap.devicePixelRatio();
         #else
+        Q_UNUSED(pixmap);
         return 1;
         #endif
     }