diff --git a/cc-haha/desktop/src/pages/EmptySession.tsx b/cc-haha/desktop/src/pages/EmptySession.tsx
index 8880788..f47902c 100644
--- a/cc-haha/desktop/src/pages/EmptySession.tsx
+++ b/cc-haha/desktop/src/pages/EmptySession.tsx
@@ -484,8 +484,9 @@ export function EmptySession() {
                 filter={atFilter}
                 onSelect={(_path, name) => {
                   if (atCursorPos >= 0) {
-                    const newValue = `${input.slice(0, atCursorPos)}${name}${input.slice(atCursorPos)}`
-                    const newCursorPos = atCursorPos + name.length
+                    const atStart = atCursorPos - atFilter.length - 1
+                    const newValue = `${input.slice(0, atStart)}${name}${input.slice(atCursorPos)}`
+                    const newCursorPos = atStart + name.length
                     setInput(newValue)
                     setFileSearchOpen(false)
                     setAtFilter('')