diff --git a/src/gallium/state_trackers/dri/drm/dri2.c b/src/gallium/state_trackers/dri/drm/dri2.c
index 2b6919d..e5bd79c 100644
--- a/src/gallium/state_trackers/dri/drm/dri2.c
+++ b/src/gallium/state_trackers/dri/drm/dri2.c
@@ -65,9 +65,12 @@ dri2_invalidate_drawable(__DRIdrawable *dPriv)
    struct dri_drawable *drawable = dri_drawable(dPriv);
 
    dri2InvalidateDrawable(dPriv);
-   drawable->dPriv->lastStamp = *drawable->dPriv->pStamp;
 
-   p_atomic_inc(&drawable->base.stamp);
+   if (drawable) {
+      drawable->dPriv->lastStamp = *drawable->dPriv->pStamp;
+
+      p_atomic_inc(&drawable->base.stamp);
+   }
 }
 
 static const __DRI2flushExtension dri2FlushExtension = {