diff --git a/effects/blur/blur.cpp b/effects/blur/blur.cpp
--- a/effects/blur/blur.cpp
+++ b/effects/blur/blur.cpp
@@ -607,10 +607,10 @@
         }
 
         if (!shape.isEmpty()) {
-            doBlur(shape, screen, data.opacity(), data.screenProjectionMatrix(), w->isDock(), w->geometry());
+            doBlur(shape, screen, data.opacity(), data.screenProjectionMatrix(),!w->hasDecoration(), w->geometry());
         }
     }
-
+        
     // Draw the window over the blurred area
     effects->drawWindow(w, mask, region, data);
 }
@@ -655,7 +655,7 @@
     m_noiseTexture.setWrapMode(GL_REPEAT);
 }
 
-void BlurEffect::doBlur(const QRegion& shape, const QRect& screen, const float opacity, const QMatrix4x4 &screenProjection, bool isDock, QRect windowRect)
+void BlurEffect::doBlur(const QRegion& shape, const QRect& screen, const float opacity, const QMatrix4x4 &screenProjection, bool noDecoration, QRect windowRect)
 {
     // Blur would not render correctly on a secondary monitor because of wrong coordinates
     // BUG: 393723
@@ -686,7 +686,7 @@
      * We want to avoid this on panels, because it looks really weird and ugly
      * when maximized windows or windows near the panel affect the dock blur.
      */
-    if (isDock) {
+    if (noDecoration) {
         m_renderTargets.last()->blitFromFramebuffer(sourceRect, destRect);
 
         if (useSRGB) {