diff --git a/ui/src/Components/ManagedSilence/index.scss b/ui/src/Components/ManagedSilence/index.scss
index 8f44f7679..7e1f19849 100644
--- a/ui/src/Components/ManagedSilence/index.scss
+++ b/ui/src/Components/ManagedSilence/index.scss
@@ -8,7 +8,7 @@
   }
 
   &.card {
-    border-left-width: 4px;
+    border-left-width: 3px;
     border-left-color: $gray-700;
   }
 }