diff --git a/app/src/protyle/wysiwyg/turnIntoList.ts b/app/src/protyle/wysiwyg/turnIntoList.ts
index f0b30af2d..4bf58e6d6 100644
--- a/app/src/protyle/wysiwyg/turnIntoList.ts
+++ b/app/src/protyle/wysiwyg/turnIntoList.ts
@@ -11,10 +11,12 @@ export const turnIntoTaskList = (protyle: IProtyle, type: string, blockElement:
             ["[]", "【】"].includes(editElement.innerHTML.substring(0, 2))
         )
     ) {
-        const contextStar2tIndex = (editElement.innerHTML.indexOf("】") + 1);
-        let contextStartIndex = (editElement.innerHTML.indexOf("]") + 1) || contextStar2tIndex;
-        if (contextStartIndex !== -1 && contextStar2tIndex < contextStartIndex) {
+        const contextStar2tIndex = editElement.innerHTML.indexOf("】") + 1;
+        let contextStartIndex = editElement.innerHTML.indexOf("]") + 1;
+        if (contextStartIndex === 0) {
             contextStartIndex = contextStar2tIndex;
+        } else if (contextStartIndex > 0 && contextStar2tIndex > 0) {
+            contextStartIndex = Math.min(contextStartIndex, contextStar2tIndex);
         }
         const isDone = editElement.innerHTML.substring(1, 2).toLowerCase() === "x";
         if (blockElement.parentElement.classList.contains("li") &&