diff --git a/src/wayland/meta-wayland-data-device.c b/src/wayland/meta-wayland-data-device.c
index b286fb9ad..d23a186ce 100644
--- a/src/wayland/meta-wayland-data-device.c
+++ b/src/wayland/meta-wayland-data-device.c
@@ -1087,7 +1087,8 @@ drag_grab_button (MetaWaylandPointerGrab *grab,
         }
       else
         {
-          meta_wayland_data_source_set_current_offer (source, NULL);
+          if (source)
+            meta_wayland_data_source_set_current_offer (source, NULL);
           meta_wayland_data_device_set_dnd_source (&seat->data_device, NULL);
           unset_selection_source (&seat->data_device, META_SELECTION_DND);
           success= FALSE;