diff --git a/src/wmtaskbar.cc b/src/wmtaskbar.cc
index 5d9f004ef..9199d418f 100644
--- a/src/wmtaskbar.cc
+++ b/src/wmtaskbar.cc
@@ -692,7 +692,10 @@ void TaskBar::updateLocation() {
 
     int dx, dy;
     unsigned dw, dh;
-    desktop->getScreenGeometry(&dx, &dy, &dw, &dh, -1);
+    int screen =
+        inrange(xineramaPrimaryScreen, 0, desktop->getScreenCount() - 1)
+        ? xineramaPrimaryScreen : -1;
+    desktop->getScreenGeometry(&dx, &dy, &dw, &dh, screen);
 
     int x = dx;
     unsigned int w = 0;