diff --git a/repository/Grafoscopio/GrafoscopioGUI.class.st b/repository/Grafoscopio/GrafoscopioGUI.class.st
index dad69a0..308acc2 100644
--- a/repository/Grafoscopio/GrafoscopioGUI.class.st
+++ b/repository/Grafoscopio/GrafoscopioGUI.class.st
@@ -129,7 +129,9 @@ GrafoscopioGUI class >> dockingBar: anObject [
 
 { #category : #'graphical interface' }
 GrafoscopioGUI class >> downloadingFrom: downloadUrl withMessage: aString into: location [
-
+	| fileName |
+	fileName := (downloadUrl splitOn: $/) last.
+	(location / fileName) exists ifTrue: [ (location / fileName) ensureDelete ].
 	[: bar |
 		bar title: aString.
 		[ZnClient new