diff --git a/client/ayon_core/pipeline/farm/pyblish_functions.py b/client/ayon_core/pipeline/farm/pyblish_functions.py
index 6740950d78..09df371371 100644
--- a/client/ayon_core/pipeline/farm/pyblish_functions.py
+++ b/client/ayon_core/pipeline/farm/pyblish_functions.py
@@ -498,11 +498,10 @@ def _get_real_files_to_rendered(collection, frames_to_render):
     file_name, extracted_frame = list(collect_frames(files).items())[0]
     if extracted_frame:
         found_frame_pattern_length = len(extracted_frame)
-        normalized_frames_to_render = set()
-        for frame_to_render in frames_to_render:
-            normalized_frames_to_render.add(
-                str(frame_to_render).zfill(found_frame_pattern_length)
-            )
+        normalized_frames_to_render = {
+            str(frame_to_render).zfill(found_frame_pattern_length)
+            for frame_to_render in frames_to_render
+        }
 
         filtered_files = []
         for file_name in files: