diff --git a/core/src/main/java/hudson/tasks/junit/CaseResult.java b/core/src/main/java/hudson/tasks/junit/CaseResult.java
index 90f4cc99830c6c3d87ac8a6ab685ced9e487e61e..667329a5854d44411fadb8dde4cae81a63a6c792 100644
--- a/core/src/main/java/hudson/tasks/junit/CaseResult.java
+++ b/core/src/main/java/hudson/tasks/junit/CaseResult.java
@@ -368,4 +368,6 @@ public final class CaseResult extends TestObject implements Comparable<CaseResul
             return lhs.getAge()-rhs.getAge();
         }
     };
+
+    private static final long serialVersionUID = 1L;
 }