--- a/StreamNotOpenError.st	Sun Jan 05 17:13:38 2020 +0100
+++ b/StreamNotOpenError.st	Sun Jan 05 17:13:40 2020 +0100
@@ -36,6 +36,12 @@
 "
 ! !
 
+!StreamNotOpenError class methodsFor:'initialization'!
+
+initialize
+    NotifierString := 'stream is not open'.
+! !
+
 !StreamNotOpenError methodsFor:'printing & storing'!
 
 description
@@ -53,3 +59,5 @@
     ^ '$Header$'
 ! !
 
+
+StreamNotOpenError initialize!