diff --git a/src/hooks/useMode.js b/src/hooks/useMode.js
index 32298b17..ebe02701 100644
--- a/src/hooks/useMode.js
+++ b/src/hooks/useMode.js
@@ -586,7 +586,7 @@ export function useMode() {
               })
             } else {
               newOuterlines.push({
-                x1: historyLines.current[i].x1 + 50,
+                x1: historyLines.current[i].x1 - 50,
                 y1: historyLines.current[i].y1 - 50,
                 x2: historyLines.current[i].x2 + 50,
                 y2: historyLines.current[i].y2 - 50,