--- a/HashStream.st	Thu Jun 06 21:36:08 2019 +0200
+++ b/HashStream.st	Thu Jun 06 23:19:34 2019 +0200
@@ -437,9 +437,10 @@
         ^ self.
     ].
 
-    self error:'unsupported argument'.
+    ArgumentError raise
 
     "Modified (comment): / 09-01-2012 / 16:54:05 / cg"
+    "Modified: / 06-06-2019 / 23:19:25 / Claus Gittinger"
 !
 
 nextPutAll:aCollection