diff --git a/gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/RevId.java b/gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/RevId.java
index 1a64ee79c1..a73fe5d1fd 100644
--- a/gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/RevId.java
+++ b/gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/RevId.java
@@ -64,4 +64,9 @@ public final class RevId {
   public boolean equals(Object o) {
     return (o instanceof RevId) && id.equals(((RevId) o).id);
   }
+
+  @Override
+  public String toString() {
+    return getClass().getSimpleName() + "{" + id + "}";
+  }
 }