diff --git a/src/components/common/DragLine.vue b/src/components/common/DragLine.vue
index 7c04915..36c16e5 100644
--- a/src/components/common/DragLine.vue
+++ b/src/components/common/DragLine.vue
@@ -60,7 +60,6 @@ onMounted(() => {
 })
 
 onUnmounted(() => {
-  dragRef.value.removeEventListener('mousedown', onMouseDown)
   document.removeEventListener('mouseup', onMouseUp)
   document.removeEventListener('mousemove', onMouseMove)
 })