diff --git a/popupinfo.cpp b/popupinfo.cpp
index debb12ddf2..61cd95879b 100644
--- a/popupinfo.cpp
+++ b/popupinfo.cpp
@@ -55,7 +55,8 @@ void PopupInfo::reset()
     KConfig gc("kdeglobals", false, false);
     gc.setGroup("Windows");
     QRect r;
-    if (gc.readBoolEntry("XineramaEnabled", true) &&
+    if (QApplication::desktop()->isVirtualDesktop() &&
+        gc.readBoolEntry("XineramaEnabled", true) &&
         gc.readBoolEntry("XineramaPlacementEnabled", true)) {
         int screen = desktop->screenNumber( QCursor::pos() );
         r = desktop->screenGeometry(screen);
diff --git a/tabbox.cpp b/tabbox.cpp
index 07c4c54246..fc3703d5fe 100644
--- a/tabbox.cpp
+++ b/tabbox.cpp
@@ -99,7 +99,8 @@ void TabBox::reset()
     KConfig gc("kdeglobals", false, false);
     gc.setGroup("Windows");
 
-    if (gc.readBoolEntry("XineramaEnabled", true) &&
+    if (QApplication::desktop()->isVirtualDesktop() &&
+        gc.readBoolEntry("XineramaEnabled", true) &&
         gc.readBoolEntry("XineramaPlacementEnabled", true)) {
         int screen =  desktop->screenNumber( QCursor::pos() );
         r = desktop->screenGeometry(screen);