diff --git a/app/src/block/popover.ts b/app/src/block/popover.ts
index 1d973de7b..de0fc298b 100644
--- a/app/src/block/popover.ts
+++ b/app/src/block/popover.ts
@@ -46,7 +46,7 @@ export const initBlockPopover = (app: App) => {
                     }
                 }
             } else if (aElement.classList.contains("av__celltext--url")) {
-                tip = `<span style="word-break: break-all">${tip.substring(0, Constants.SIZE_TITLE)}</span><br>${aElement.getAttribute("data-name")}`;
+                tip = tip ? `<span style="word-break: break-all">${tip.substring(0, Constants.SIZE_TITLE)}</span><br>${aElement.getAttribute("data-name")}` : aElement.getAttribute("data-name");
             } else if (aElement.classList.contains("av__calc--ashow") && aElement.clientWidth + 2 < aElement.scrollWidth) {
                 tip = aElement.lastChild.textContent + " " + aElement.firstElementChild.textContent;
             }