diff --git a/src/de/pangaea/metadataportal/harvester/RetryAfterIOException.java b/src/de/pangaea/metadataportal/harvester/RetryAfterIOException.java
index e4546c6..65af27f 100644
--- a/src/de/pangaea/metadataportal/harvester/RetryAfterIOException.java
+++ b/src/de/pangaea/metadataportal/harvester/RetryAfterIOException.java
@@ -47,7 +47,7 @@ public int getRetryAfter() {
   
   @Override
   public IOException getCause() {
-    return (IOException) getCause();
+    return (IOException) super.getCause();
   }
 
   private int retryAfter;