diff --git a/dix/devices.c b/dix/devices.c
index 5bf956ead..a3fbe8140 100644
--- a/dix/devices.c
+++ b/dix/devices.c
@@ -2627,6 +2627,7 @@ AttachDevice(ClientPtr client, DeviceIntPtr dev, DeviceIntPtr master)
         screen = miPointerGetScreen(dev);
         screen->DeviceCursorCleanup(dev, screen);
         free(dev->spriteInfo->sprite);
+        dev->spriteInfo->sprite = NULL;
     }
 
     dev->master = master;