diff --git a/client/ayon_core/plugins/publish/extract_review.py b/client/ayon_core/plugins/publish/extract_review.py
index 7c38b0453b..a3db16c898 100644
--- a/client/ayon_core/plugins/publish/extract_review.py
+++ b/client/ayon_core/plugins/publish/extract_review.py
@@ -196,7 +196,7 @@ class ExtractReview(pyblish.api.InstancePlugin):
                 ).format(repre_name))
                 continue
 
-            input_ext = repre["ext"]
+            input_ext = repre["ext"].lower()
             if input_ext.startswith("."):
                 input_ext = input_ext[1:]