1 files changed, 2 insertions, 0 deletions
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/project/DeleteBranches.java b/gerrit-server/src/main/java/com/google/gerrit/server/project/DeleteBranches.java
index f4fa4468ee..7d53fecc8b 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/project/DeleteBranches.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/project/DeleteBranches.java
@@ -127,6 +127,8 @@ public class DeleteBranches
       command.setResult(Result.REJECTED_OTHER_REASON, "it has open changes");
     }
     RefUpdate u = r.updateRef(branch);
+    u.setExpectedOldObjectId(r.exactRef(branch).getObjectId());
+    u.setNewObjectId(ObjectId.zeroId());
     u.setForceUpdate(true);
     refDeletionValidator.validateRefOperation(
         project.getName(), identifiedUser.get(), u);