diff --git a/antarest/study/storage/rawstudy/raw_study_service.py b/antarest/study/storage/rawstudy/raw_study_service.py
index c0af08675a..ec53fb697f 100644
--- a/antarest/study/storage/rawstudy/raw_study_service.py
+++ b/antarest/study/storage/rawstudy/raw_study_service.py
@@ -278,23 +278,20 @@ def delete(self, metadata: RawStudy) -> None:
 
     def delete_output(self, metadata: RawStudy, output_name: str) -> None:
         """
-        Delete output folder
-        Args:
-            metadata: study
-            output_name: output simulation
-
-        Returns:
+        Delete output folder or archive (zip or 7z) of a study.
 
+        Args:
+            metadata: The study metadata.
+            output_name: Output name to be deleted.
         """
         study_path = self.get_study_path(metadata)
         output_path = study_path / "output" / output_name
-        if output_path.exists() and output_path.is_dir():
+        if output_path.is_dir():
             shutil.rmtree(output_path, ignore_errors=True)
-        elif (output_path.parent / f"{output_name}.7z").exists():
-            (output_path.parent / f"{output_name}.7z").unlink(missing_ok=True)
         else:
-            output_path = output_path.parent / f"{output_name}.zip"
-            output_path.unlink(missing_ok=True)
+            locations = [output_path.with_suffix(".7z"), output_path.with_suffix(".zip")]
+            for path in locations:
+                path.unlink(missing_ok=True)
         remove_from_cache(self.cache, metadata.id)
 
     def import_study(self, metadata: RawStudy, stream: t.BinaryIO) -> Study: