diff --git a/hw/xquartz/darwin.h b/hw/xquartz/darwin.h
index c5e2ed80d..325122dfd 100644
--- a/hw/xquartz/darwin.h
+++ b/hw/xquartz/darwin.h
@@ -106,6 +106,7 @@ enum {
     kXDarwinBringAllToFront,  // bring all X windows to front
     kXDarwinToggleFullscreen, // Enable/Disable fullscreen mode
     kXDarwinSetRootless,      // Set rootless mode
+    kXDarwinSpaceChanged,     // Spaces changed
     /*
      * AppleWM events
      */
@@ -116,7 +117,7 @@ enum {
      */
     kXDarwinDisplayChanged,   // display configuration has changed
     kXDarwinWindowState,      // window visibility state has changed
-    kXDarwinWindowMoved       // window has moved on screen
+    kXDarwinWindowMoved,      // window has moved on screen
 };
 
 #define ENABLE_DEBUG_LOG 1
diff --git a/hw/xquartz/quartz.c b/hw/xquartz/quartz.c
index 6f42c538f..a034c9fac 100644
--- a/hw/xquartz/quartz.c
+++ b/hw/xquartz/quartz.c
@@ -266,7 +266,7 @@ static void QuartzUpdateScreens(void)
     
 #ifndef FAKE_RANDR
     if(!QuartzRandRInit(pScreen))
-      FatalError("Failed to init RandR extension.\n");
+        FatalError("Failed to init RandR extension.\n");
 #endif
 
     DarwinAdjustScreenOrigins(&screenInfo);
@@ -364,6 +364,14 @@ static void QuartzSetRootClip(
     }
 }
 
+/* 
+ * QuartzSpaceChanged
+ *  Unmap offscreen windows, map onscreen windows
+ */
+static void QuartzSpaceChanged(uint32_t space_id) {
+    /* Do something special here, so we don't depend on quartz-wm for spaces to work... */
+    DEBUG_LOG("Space Changed (%u) ... do something interesting...\n", space_id);
+}
 
 /*
  * QuartzMessageServerThread
@@ -494,6 +502,10 @@ void QuartzProcessEvent(xEvent *xe) {
             RootlessOrderAllWindows();
             break;
 
+        case kXDarwinSpaceChanged:
+            DEBUG_LOG("kXDarwinSpaceChanged\n");
+            QuartzSpaceChanged(xe->u.clientMessage.u.l.longs0);
+            break;
         default:
             ErrorF("Unknown application defined event type %d.\n", xe->u.u.type);
     }
diff --git a/hw/xquartz/xpr/xprScreen.c b/hw/xquartz/xpr/xprScreen.c
index db36403df..4dc5846d5 100644
--- a/hw/xquartz/xpr/xprScreen.c
+++ b/hw/xquartz/xpr/xprScreen.c
@@ -63,6 +63,7 @@ static const char *xprOpenGLBundle = "glxCGL.bundle";
  */
 static void eventHandler(unsigned int type, const void *arg,
                          unsigned int arg_size, void *data) {
+    
     switch (type) {
         case XP_EVENT_DISPLAY_CHANGED:
             DEBUG_LOG("XP_EVENT_DISPLAY_CHANGED\n");
@@ -105,6 +106,13 @@ static void eventHandler(unsigned int type, const void *arg,
                 DRISurfaceNotify(*(xp_surface_id *) arg, kind);
             }
             break;
+        case  XP_EVENT_SPACE_CHANGED:
+            ErrorF("XP_EVENT_SPACE_CHANGED\n");
+            if(arg_size == sizeof(uint32_t)) {
+                uint32_t space_id = *(uint32_t *)arg;
+                QuartzMessageServerThread(kXDarwinSpaceChanged, 1, space_id);
+            }
+            break;
         default:
             ErrorF("Unknown XP_EVENT type (%d) in xprScreen:eventHandler\n", type);
     }
@@ -233,7 +241,8 @@ xprDisplayInit(void)
                      | XP_EVENT_WINDOW_STATE_CHANGED
                      | XP_EVENT_WINDOW_MOVED
                      | XP_EVENT_SURFACE_CHANGED
-                     | XP_EVENT_SURFACE_DESTROYED,
+                     | XP_EVENT_SURFACE_DESTROYED
+                     | XP_EVENT_SPACE_CHANGED,
                      eventHandler, NULL);
 
     AppleDRIExtensionInit();