diff --git a/client/ui/debug.go b/client/ui/debug.go
index e604ec28b..ab7dba37a 100644
--- a/client/ui/debug.go
+++ b/client/ui/debug.go
@@ -627,7 +627,7 @@ func showUploadFailedDialog(w fyne.Window, localPath, failureReason string) {
 			"A local copy was saved at:\n%s", failureReason, localPath)),
 	)
 
-	customDialog := dialog.NewCustom("Upload Failed", "cancel", content, w)
+	customDialog := dialog.NewCustom("Upload Failed", "Cancel", content, w)
 
 	buttonBox := container.NewHBox(
 		createButtonWithAction("Open file", func() {