diff --git a/instagram_private_api/endpoints/upload.py b/instagram_private_api/endpoints/upload.py
index c173a45a..5bf63350 100644
--- a/instagram_private_api/endpoints/upload.py
+++ b/instagram_private_api/endpoints/upload.py
@@ -738,8 +738,7 @@ def post_album(self, medias, caption='', location=None, **kwargs):
                     raise ValueError('Duration not specified.')
                 if not media.get('thumbnail'):
                     raise ValueError('Thumbnail not specified.')
-            aspect_ratio = (media['size'][0] * 1.0) / (media['size'][1] * 1.0)
-            if aspect_ratio > 1.0 or aspect_ratio < 1.0:
+            if not self.compatible_aspect_ratio(media['size']):
                 raise ValueError('Invalid media aspect ratio.')
 
             if media['type'] == 'video':