diff --git a/src/components/segmented/segmented.less b/src/components/segmented/segmented.less
index 64ea95e0ce..8c3bd31c96 100644
--- a/src/components/segmented/segmented.less
+++ b/src/components/segmented/segmented.less
@@ -81,7 +81,7 @@
     top: 0;
     left: 0;
     width: 0;
-    height: 100%;
+    height: calc(100% - 8px);
     padding: 4px 0;
   }