diff --git a/app/templates/assiduites/widgets/conflict.j2 b/app/templates/assiduites/widgets/conflict.j2
index 8a60eae27..653eb4ff1 100644
--- a/app/templates/assiduites/widgets/conflict.j2
+++ b/app/templates/assiduites/widgets/conflict.j2
@@ -59,7 +59,7 @@ function getWidth(start, end) {
 
   const duration = (endTime - startTime) / 1000 / 60;
 
-  const percent = (duration / (t_end * 60 - t_start * 60)) * 100;
+  const percent = Math.min((duration / (t_end * 60 - t_start * 60)) * 100, 100);
   return percent + "%";
 }