diff --git a/src/duplicacy_wasabistorage.go b/src/duplicacy_wasabistorage.go
index b4011c4..9cf59a2 100644
--- a/src/duplicacy_wasabistorage.go
+++ b/src/duplicacy_wasabistorage.go
@@ -97,8 +97,14 @@ func (storage *WasabiStorage) MoveFile(
 	threadIndex int, from string, to string,
 ) (err error) {
 
-	// The from path includes the bucket
-	from_path := fmt.Sprintf("/%s/%s/%s", storage.bucket, storage.storageDir, from)
+	var from_path string
+	// The from path includes the bucket.  Take care not to include an empty storageDir
+	// string as Wasabi's backend will return 404 on URLs with double slashes.
+	if (storage.storageDir == "") {
+		from_path = fmt.Sprintf("/%s/%s", storage.bucket, from)
+	} else {
+		from_path = fmt.Sprintf("/%s/%s/%s", storage.bucket, storage.storageDir, from)
+	}
 
 	object := fmt.Sprintf("https://%s@%s%s",
 		storage.region, storage.endpoint, from_path)