--- a/AbstractSourceCodeManager.st	Sun Jan 05 17:26:19 2020 +0100
+++ b/AbstractSourceCodeManager.st	Sun Jan 05 17:26:26 2020 +0100
@@ -2657,7 +2657,7 @@
         tempFile := tempDir construct:classFileName.
         [
             aStream := tempFile writeStream.
-        ] on:FileStream openErrorSignal do:[:ex|
+        ] on:OpenError do:[:ex|
             self reportError:('temporary fileout failed').
             ^ false
         ].