diff --git a/src/import/load-costume.js b/src/import/load-costume.js
index b8a1ff8c0..a94852afb 100644
--- a/src/import/load-costume.js
+++ b/src/import/load-costume.js
@@ -219,6 +219,7 @@ const loadCostumeFromAsset = function (costume, runtime, optVersion) {
                 // Use default asset if original fails to load
                 costume.assetId = runtime.storage.defaultAssetId.ImageVector;
                 costume.asset = runtime.storage.get(costume.assetId);
+                costume.md5 = `${costume.assetId}.${AssetType.ImageVector.runtimeFormat}`;
                 return loadVector_(costume, runtime);
             });
     }