diff --git a/src/main/java/org/junit/runner/Result.java b/src/main/java/org/junit/runner/Result.java
index 4b5f4a406238..ff53b084375f 100644
--- a/src/main/java/org/junit/runner/Result.java
+++ b/src/main/java/org/junit/runner/Result.java
@@ -188,7 +188,7 @@ public SerializedForm(Result result) {
         }
 
         @SuppressWarnings("unchecked")
-        private SerializedForm(ObjectInputStream.GetField fields) throws IOException {
+        private SerializedForm(ObjectInputStream.GetField fields) throws IOException, ClassNotFoundException {
             fCount = (AtomicInteger) fields.get("fCount", null);
             fIgnoreCount = (AtomicInteger) fields.get("fIgnoreCount", null);
             assumptionFailureCount = (AtomicInteger) fields.get("assumptionFailureCount", null);