diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 281e458db8b3197ee4265ff8d5c837eec73f7511..83f7cc5fab108dd52d9d9ea190ef7f08fe2eaa48 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -33,7 +33,7 @@
 /*
  * Supported features
  */
-#define CEPH_FEATURE_SUPPORTED CEPH_FEATURE_NOSRCADDR
+#define CEPH_FEATURE_SUPPORTED CEPH_FEATURE_NOSRCADDR | CEPH_FEATURE_FLOCK
 #define CEPH_FEATURE_REQUIRED  CEPH_FEATURE_NOSRCADDR
 
 /*