diff --git a/src/virt-viewer-app.c b/src/virt-viewer-app.c
index 5a1204b..1b09cc7 100644
--- a/src/virt-viewer-app.c
+++ b/src/virt-viewer-app.c
@@ -348,7 +348,23 @@ virt_viewer_app_quit(VirtViewerApp *self)
 static gint
 get_n_client_monitors(void)
 {
-    return gdk_screen_get_n_monitors(gdk_screen_get_default());
+    GdkScreen *screen = gdk_screen_get_default();
+    gint num = gdk_screen_get_n_monitors(screen);
+    gint ret = 0;
+    GdkRectangle outer, inner;
+    for (gint o = 0; o < num; ++o) {
+        gboolean ok = TRUE;
+        gdk_screen_get_monitor_geometry(screen, o, &outer);
+        for (gint i = 0; i < o; ++i) {
+            gdk_screen_get_monitor_geometry(screen, i, &inner);
+            if (outer.x == inner.x && outer.y == inner.y) {
+                    ok = FALSE;
+                    break;
+            }
+        }
+        if (ok) ret++;
+    }
+    return ret;
 }
 
 GList* virt_viewer_app_get_initial_displays(VirtViewerApp* self)