diff --git a/effects/blur/blur.cpp b/effects/blur/blur.cpp
index 28ed0d593a..4852f76f83 100644
--- a/effects/blur/blur.cpp
+++ b/effects/blur/blur.cpp
@@ -394,9 +394,9 @@ void BlurEffect::drawWindow(EffectWindow *w, int mask, QRegion region, WindowPai
 
         if (!shape.isEmpty()) {
             if (m_shouldCache && !translated) {
-                doCachedBlur(w, region, data.opacity * data.contents_opacity);
+                doCachedBlur(w, region, data.opacity);
             } else {
-                doBlur(shape, screen, data.opacity * data.contents_opacity);
+                doBlur(shape, screen, data.opacity);
             }
         }
     }
diff --git a/libkwineffects/kwineffects.cpp b/libkwineffects/kwineffects.cpp
index 586d759026..7428c6ac85 100644
--- a/libkwineffects/kwineffects.cpp
+++ b/libkwineffects/kwineffects.cpp
@@ -208,7 +208,6 @@ void PaintData::setRotationOrigin(const QVector3D &origin)
 WindowPaintData::WindowPaintData(EffectWindow* w)
     : PaintData()
     , opacity(w->opacity())
-    , contents_opacity(1.0)
     , decoration_opacity(1.0)
     , saturation(1)
     , brightness(1)
@@ -220,7 +219,6 @@ WindowPaintData::WindowPaintData(EffectWindow* w)
 WindowPaintData::WindowPaintData(const WindowPaintData &other)
     : PaintData()
     , opacity(other.opacity)
-    , contents_opacity(other.contents_opacity)
     , decoration_opacity(other.decoration_opacity)
     , saturation(other.saturation)
     , brightness(other.brightness)
diff --git a/libkwineffects/kwineffects.h b/libkwineffects/kwineffects.h
index 4ff0492762..afb652a223 100644
--- a/libkwineffects/kwineffects.h
+++ b/libkwineffects/kwineffects.h
@@ -1864,7 +1864,6 @@ public:
      * way for decoration.
      */
     double opacity;
-    double contents_opacity;
     double decoration_opacity;
     /**
      * Saturation of the window, in range [0; 1]
diff --git a/scene_opengl.cpp b/scene_opengl.cpp
index 9122489e26..ef8b7281e0 100644
--- a/scene_opengl.cpp
+++ b/scene_opengl.cpp
@@ -573,9 +573,9 @@ void SceneOpenGL::Window::performPaint(int mask, QRegion region, WindowPaintData
     WindowQuadList contentQuads = data.quads.select(WindowQuadContents);
     if (!contentQuads.empty()) {
         texture.bind();
-        prepareStates(Content, data.opacity * data.contents_opacity, data.brightness, data.saturation, data.shader);
+        prepareStates(Content, data.opacity, data.brightness, data.saturation, data.shader);
         renderQuads(mask, region, contentQuads, &texture, false, hardwareClipping);
-        restoreStates(Content, data.opacity * data.contents_opacity, data.brightness, data.saturation, data.shader);
+        restoreStates(Content, data.opacity, data.brightness, data.saturation, data.shader);
         texture.unbind();
 #ifndef KWIN_HAVE_OPENGLES
         if (static_cast<SceneOpenGL*>(scene)->debug) {