diff --git a/src/calibre/gui2/progress_indicator/QProgressIndicator.cpp b/src/calibre/gui2/progress_indicator/QProgressIndicator.cpp
index b028a19f22..8cba302c33 100644
--- a/src/calibre/gui2/progress_indicator/QProgressIndicator.cpp
+++ b/src/calibre/gui2/progress_indicator/QProgressIndicator.cpp
@@ -165,7 +165,7 @@ class CalibreStyle: public QProxyStyle {
             setObjectName(QString("calibre"));
             desktop_environment = detectDesktopEnvironment(); 
             button_layout = static_cast<QDialogButtonBox::ButtonLayout>(QProxyStyle::styleHint(SH_DialogButtonLayout));
-            if (QLatin1String("GNOME") == desktop_environment || QLatin1String("MATE") == desktop_environment || QLatin1String("UNITY") == desktop_environment || QLatin1String("CINNAMON") == desktop_environment)
+            if (QLatin1String("GNOME") == desktop_environment || QLatin1String("MATE") == desktop_environment || QLatin1String("UNITY") == desktop_environment || QLatin1String("CINNAMON") == desktop_environment || QLatin1String("X-CINNAMON") == desktop_environment)
                 button_layout = QDialogButtonBox::GnomeLayout;
         }