diff --git a/packages/pi-fff/src/index.ts b/packages/pi-fff/src/index.ts
index 0d0d61bc1..19664b2ab 100644
--- a/packages/pi-fff/src/index.ts
+++ b/packages/pi-fff/src/index.ts
@@ -891,8 +891,9 @@ export default function fffExtension(pi: ExtensionAPI) {
       }
 
       const markerWidth = visibleWidth(this.marker);
+      if (previewWidth < markerWidth) return [this.suffix];
       return [
-        `${sliceByColumn(this.preview, 0, Math.max(0, previewWidth - markerWidth), true)}${this.marker} ${this.suffix}`,
+        `${sliceByColumn(this.preview, 0, previewWidth - markerWidth, true)}${this.marker} ${this.suffix}`,
       ];
     }