diff --git a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/api/projects/BranchApi.java b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/api/projects/BranchApi.java
index 250eca4984..a1f7327b7c 100644
--- a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/api/projects/BranchApi.java
+++ b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/api/projects/BranchApi.java
@@ -57,7 +57,7 @@ public interface BranchApi {
     }
 
     @Override
-    public List<ReflogEntryInfo> reflog() {
+    public List<ReflogEntryInfo> reflog() throws RestApiException {
       throw new NotImplementedException();
     }
   }