diff --git a/src/editor/commands.ts b/src/editor/commands.ts
index 2021954..021aefb 100644
--- a/src/editor/commands.ts
+++ b/src/editor/commands.ts
@@ -245,7 +245,7 @@ const commandShapes: CommandShape[] = [
 ] as const
 
 let commandSource = () => commandShapes
-export const setCommandSource = (do: () => CommandShape[]) => {
+export const setCommandSource = (fn: () => CommandShape[]) => {
   commandSource = fn
 }