diff --git a/other/ca-bundle.crt b/other/ca-bundle.crt
index e71e30128..ddfc55929 100644
--- a/other/ca-bundle.crt
+++ b/other/ca-bundle.crt
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diff --git a/src/app/qupzilla.cpp b/src/app/qupzilla.cpp
index 5e8142d53..513a00764 100644
--- a/src/app/qupzilla.cpp
+++ b/src/app/qupzilla.cpp
@@ -93,6 +93,7 @@ QupZilla::QupZilla(StartBehaviour behaviour, QUrl startUrl)
     , m_actionPrivateBrowsing(0)
     , m_statusBarMessage(new StatusBarMessage(this))
     , m_sideBarWidth(0)
+    , m_usingTransparentBackground(false)
 {
     setObjectName("mainwindow");
     setAttribute(Qt::WA_DeleteOnClose);
@@ -480,6 +481,13 @@ void QupZilla::loadSettings()
     m_actionPrivateBrowsing->setChecked(mApp->webSettings()->testAttribute(QWebSettings::PrivateBrowsingEnabled));
     m_privateBrowsing->setVisible(mApp->webSettings()->testAttribute(QWebSettings::PrivateBrowsingEnabled));
 
+#ifdef Q_WS_WIN
+    if (m_usingTransparentBackground && !makeTransparent) {
+        QtWin::enableBlurBehindWindow(this, false);
+        m_usingTransparentBackground = false;
+    }
+#endif
+
     if (!makeTransparent) {
         return;
     }
@@ -498,6 +506,8 @@ void QupZilla::loadSettings()
     if (QtWin::isCompositionEnabled()) {
         QtWin::extendFrameIntoClientArea(this);
         setContentsMargins(0, 0, 0, 0);
+
+        m_usingTransparentBackground = true;
     }
 }
 
diff --git a/src/app/qupzilla.h b/src/app/qupzilla.h
index e8a825e10..ea23f6677 100644
--- a/src/app/qupzilla.h
+++ b/src/app/qupzilla.h
@@ -264,6 +264,7 @@ private:
     QColor m_menuTextColor;
 
     int m_sideBarWidth;
+    bool m_usingTransparentBackground;
 
     //Used for F11 FullScreen remember visibility
     //of menubar and statusbar