1 files changed, 10 insertions, 3 deletions
diff --git a/src/main/java/org/junit/internal/ArrayComparisonFailure.java b/src/main/java/org/junit/internal/ArrayComparisonFailure.java
index 8627d6e..d300e7e 100644
--- a/src/main/java/org/junit/internal/ArrayComparisonFailure.java
+++ b/src/main/java/org/junit/internal/ArrayComparisonFailure.java
@@ -16,11 +16,12 @@ public class ArrayComparisonFailure extends AssertionError {
 
     /*
      * We have to use the f prefix until the next major release to ensure
-     * serialization compatibility. 
-     * See https://github.com/junit-team/junit/issues/976
+     * serialization compatibility.
+     * See https://github.com/junit-team/junit4/issues/976
      */
     private final List<Integer> fIndices = new ArrayList<Integer>();
     private final String fMessage;
+    private final AssertionError fCause;
 
     /**
      * Construct a new <code>ArrayComparisonFailure</code> with an error text and the array's
@@ -32,7 +33,8 @@ public class ArrayComparisonFailure extends AssertionError {
      */
     public ArrayComparisonFailure(String message, AssertionError cause, int index) {
         this.fMessage = message;
-        initCause(cause);
+        this.fCause = cause;
+        initCause(fCause);
         addDimension(index);
     }
 
@@ -41,6 +43,11 @@ public class ArrayComparisonFailure extends AssertionError {
     }
 
     @Override
+    public synchronized Throwable getCause() {
+        return super.getCause() == null ? fCause : super.getCause();
+    }
+
+    @Override
     public String getMessage() {
         StringBuilder sb = new StringBuilder();
         if (fMessage != null) {