diff --git a/src/util/qpolygon-utils.js b/src/util/qpolygon-utils.js
index 070fb096..77bc8cae 100644
--- a/src/util/qpolygon-utils.js
+++ b/src/util/qpolygon-utils.js
@@ -2629,6 +2629,7 @@ export const drawRidgeRoof = (roofId, canvas, textMode) => {
         if (index !== -1) {
           baseRidgeLines.splice(index, 1)
         }
+        canvas.remove(duplicateLine)
       })
     }
   })