diff --git a/packages/common/nbstore/src/impls/cloud/blob.ts b/packages/common/nbstore/src/impls/cloud/blob.ts
index a11684f09..8a35edb2c 100644
--- a/packages/common/nbstore/src/impls/cloud/blob.ts
+++ b/packages/common/nbstore/src/impls/cloud/blob.ts
@@ -79,9 +79,12 @@ export class CloudBlobStorage extends BlobStorageBase {
       });
     } catch (err) {
       const userFriendlyError = UserFriendlyError.fromAny(err);
-      if (userFriendlyError.is('BLOB_QUOTA_EXCEEDED')) {
+      if (userFriendlyError.is('STORAGE_QUOTA_EXCEEDED')) {
         throw new OverCapacityError();
       }
+      if (userFriendlyError.is('BLOB_QUOTA_EXCEEDED')) {
+        throw new OverSizeError();
+      }
       if (userFriendlyError.is('CONTENT_TOO_LARGE')) {
         throw new OverSizeError();
       }