1 files changed, 4 insertions, 0 deletions
diff --git a/java/src/Ice/UserExceptionWriter.java b/java/src/Ice/UserExceptionWriter.java
index b2701394543..eac296defde 100644
--- a/java/src/Ice/UserExceptionWriter.java
+++ b/java/src/Ice/UserExceptionWriter.java
@@ -26,6 +26,10 @@ public abstract class UserExceptionWriter extends UserException
     __write(IceInternal.BasicStream os)
     {
         OutputStream stream = (OutputStream)os.closure();
+        if(stream == null)
+        {
+            stream = new OutputStreamI(_communicator, os);
+        }
         write(stream);
     }