Index: src/ssh-askpass-fullscreen.c
--- src/ssh-askpass-fullscreen.c.orig
+++ src/ssh-askpass-fullscreen.c
@@ -230,7 +230,7 @@ enter_callback(GtkWidget *widget ATTR_UNUSED,
 
 	puts(passphrase);
 		
-	memset((void*)passphrase, '\0', strlen(passphrase)); 
+	memset((void*)passphrase, '\b', strlen(passphrase)); 
 	gtk_entry_set_text(GTK_ENTRY(entry), passphrase);
 	gtk_main_quit();
 }
