diff --git a/.gitea/issue_template/proposal.yaml b/.gitea/issue_template/proposal.yaml
index 96ced09..299e8ea 100644
--- a/.gitea/issue_template/proposal.yaml
+++ b/.gitea/issue_template/proposal.yaml
@@ -49,7 +49,7 @@ body:
       description: "Relevant topics for this task."
       multiple: true
       options:
-        - None
+        - null
         - 2d segment tree
         - 2sat
         - 3d prefix sum