diff --git a/migrations/20240802-make-green-dot-appear-even-when-chat-muted.sql b/migrations/20240802-make-green-dot-appear-even-when-chat-muted.sql
index 0f80d02f6..a79f743d4 100644
--- a/migrations/20240802-make-green-dot-appear-even-when-chat-muted.sql
+++ b/migrations/20240802-make-green-dot-appear-even-when-chat-muted.sql
@@ -1,4 +1,4 @@
 alter table chat_memberships add column muted bool not null default false;
 alter table chat_memberships alter column muted drop default;
-update chat_memberships set muted=true, notification=false where notification=null;
+update chat_memberships set muted=true, notification=false where notification is null;
 alter table chat_memberships alter column notification set not null;