1 files changed, 4 insertions, 1 deletions
diff --git a/container-core/src/main/java/com/yahoo/processing/request/CloneHelper.java b/container-core/src/main/java/com/yahoo/processing/request/CloneHelper.java
index 64a356fbf2a..69ee284a3df 100644
--- a/container-core/src/main/java/com/yahoo/processing/request/CloneHelper.java
+++ b/container-core/src/main/java/com/yahoo/processing/request/CloneHelper.java
@@ -97,7 +97,10 @@ public class CloneHelper {
             return ((HashSet<?>) object).clone();
         try {
             return cloneByReflection(object);
-        } catch (ClassCastException e) {
+        } catch (IllegalArgumentException e) {
+            if ( ! (e.getCause() instanceof ClassCastException))
+                throw e;
+
             // When changing bundles you might end up having cached the old method pointing to old bundle,
             // That might then lead to a class cast exception when invoking the wrong clone method.
             // So we will give dropping the cache a try, and retry the clone.