diff --git a/fs/ocfs2/dlm/dlmlock.c b/fs/ocfs2/dlm/dlmlock.c
index 69cf369961c4f999566d07addfda5bdd06190326..7009292aac5ad4dd2ddd6f0511af0820e64c4b22 100644
--- a/fs/ocfs2/dlm/dlmlock.c
+++ b/fs/ocfs2/dlm/dlmlock.c
@@ -106,6 +106,9 @@ static int dlm_can_grant_new_lock(struct dlm_lock_resource *res,
 
 		if (!dlm_lock_compatible(tmplock->ml.type, lock->ml.type))
 			return 0;
+		if (!dlm_lock_compatible(tmplock->ml.convert_type,
+					 lock->ml.type))
+			return 0;
 	}
 
 	return 1;