diff --git a/src/modules/gameboard.js b/src/modules/gameboard.js
index 9d054d0..5a804a3 100644
--- a/src/modules/gameboard.js
+++ b/src/modules/gameboard.js
@@ -250,6 +250,7 @@ export function start(el) {
           sourceCell = selected.parentElement;
 
         if (isOnBoard && (!sl || sl.classList.contains('active')) && sourceCell != cell) {
+          clearSightLine();
           drawSightLine(sourceCell, cell);
         }
       }