diff --git a/repository/Grafoscopio/GrafoscopioGUI.class.st b/repository/Grafoscopio/GrafoscopioGUI.class.st
index 16e5366..49594bc 100644
--- a/repository/Grafoscopio/GrafoscopioGUI.class.st
+++ b/repository/Grafoscopio/GrafoscopioGUI.class.st
@@ -130,6 +130,10 @@ 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