diff --git a/src/views/GuideView.vue b/src/views/GuideView.vue
index 89641e05099429479df3d13aa48e9948276798e5..1c1b3a107d75ea163370b2f0b7d9c5d15c5ca0d4 100644
--- a/src/views/GuideView.vue
+++ b/src/views/GuideView.vue
@@ -54,7 +54,8 @@ const onGuideModificationPositions = computed(
       interId: inter.id,
       position:
         inter.duplexes[0].start1 +
-        (inter.duplexes[0].end2 - inter.modification.position)
+        (inter.duplexes[0].end2 - inter.modification.position) +
+        1
     })) || []
 )