diff --git a/lib/zin/wg/monaco/js/v1.js b/lib/zin/wg/monaco/js/v1.js
index b3ca49b1a4..e0f7c23274 100644
--- a/lib/zin/wg/monaco/js/v1.js
+++ b/lib/zin/wg/monaco/js/v1.js
@@ -54,7 +54,7 @@ function createMonaco(id, action, options, diffContent, onMouseDown, onMouseMove
             const lines = selectedLines.split(',');
             const startLine = parseInt(lines[0]);
             const endLine   = parseInt(lines[1] || startLine + 1);
-            editor.setSelection(new monaco.Range(startLine, 1, endLine, 1))
+            editor.setSelection(new monaco.Range(startLine, 1, endLine + 1, 1))
         }
     });
 }