diff --git a/app/src/protyle/render/av/blockAttr.ts b/app/src/protyle/render/av/blockAttr.ts
index a3a0e6920..2bdc07f1f 100644
--- a/app/src/protyle/render/av/blockAttr.ts
+++ b/app/src/protyle/render/av/blockAttr.ts
@@ -54,7 +54,7 @@ export const genAVValueHTML = (value: IAVCellValue) => {
             html = `<textarea rows="${value.text.content.split("\n").length}" class="b3-text-field b3-text-field--text fn__flex-1">${value.text.content}</textarea>`;
             break;
         case "number":
-            html = `<input value="${value.number.content}" type="number" class="b3-text-field b3-text-field--text fn__flex-1">`;
+            html = `<input value="${value.number.content || ""}" type="number" class="b3-text-field b3-text-field--text fn__flex-1">`;
             break;
         case "mSelect":
         case "select":