diff --git a/libs/ui/GraphicBuffer.cpp b/libs/ui/GraphicBuffer.cpp
index 580788d..83ae469 100644
--- a/libs/ui/GraphicBuffer.cpp
+++ b/libs/ui/GraphicBuffer.cpp
@@ -281,6 +281,8 @@
     if (handle != 0) {
         status_t err = mBufferMapper.registerBuffer(handle);
         if (err != NO_ERROR) {
+            width = height = stride = format = usage = 0;
+            handle = NULL;
             ALOGE("unflatten: registerBuffer failed: %s (%d)",
                     strerror(-err), err);
             return err;