diff --git a/main.py b/main.py
index 3e2f1fa..6824f35 100644
--- a/main.py
+++ b/main.py
@@ -117,7 +117,7 @@ def create_box(row, fieldnames: list[str], reviewer_ids: list[str]) -> str:
             multiselect=True,
             min_selection_count=MIN_FIELDS,
         )
-        selected_fields: list[str] = [s[0] for s in selected if type(s) == tuple]
+        selected_fields: list[str] = [s[0] for s in selected if type(s) is tuple]
 
         cmd = custom_tex_command(selected_fields)