diff --git a/labelbox/data/serialization/labelbox_v1/label.py b/labelbox/data/serialization/labelbox_v1/label.py
index 587722911..ff4da0e4c 100644
--- a/labelbox/data/serialization/labelbox_v1/label.py
+++ b/labelbox/data/serialization/labelbox_v1/label.py
@@ -213,7 +213,7 @@ def _infer_media_type(self) -> str:
         elif self._has_object_annotations():
             return 'image'
         else:
-            if self._row_contains((".jpg", ".png", ".jpeg")) and self._is_url():
+            if self._row_contains((".jpg", ".png", ".PNG", ".jpeg")) and self._is_url():
                 return 'image'
             elif (self._row_contains((".txt", ".text", ".html")) and
                   self._is_url()) or not self._is_url():