diff --git a/functions/src/index.ts b/functions/src/index.ts
index e49372c..4f29223 100644
--- a/functions/src/index.ts
+++ b/functions/src/index.ts
@@ -44,6 +44,7 @@ export const generateThumb = functions.storage.object().onFinalize(async object
     await bucket.upload(thumbnailLocalPath, {
         destination: join(bucketDirectory, thumbnailName),
     });
+    console.log('Thumbnail created successfully')
 
     // Exit the function deleting all the temprorary files.
     return fs.remove(workingDirectory);
diff --git a/lib/src/resources/firebase_storage_provider.dart b/lib/src/resources/firebase_storage_provider.dart
index 317307d..1715302 100644
--- a/lib/src/resources/firebase_storage_provider.dart
+++ b/lib/src/resources/firebase_storage_provider.dart
@@ -32,7 +32,10 @@ class FirebaseStorageProvider {
     final String fileId = _uuid.v1();
     final StorageReference fileReference =
         _storage.child('$folder$fileId.$type');
-    return fileReference.putFile(file);
+    return fileReference.putFile(
+      file,
+      StorageMetadata(contentType: 'image'),
+    );
   }
 
   /// Deletes a file from the firebase storage bucket given its path.