diff --git a/style/mixins/form.less b/style/mixins/form.less
index 1d32480ae0..1c1ba1bee3 100644
--- a/style/mixins/form.less
+++ b/style/mixins/form.less
@@ -41,7 +41,7 @@
     width: 100%;
     padding: 0;
     margin-bottom: 20px;
-    font-size: (@font-size-base * 1.5);
+    font-size: 14px;
     line-height: inherit;
     color: @legend-color;
     border: 0;
diff --git a/style/themes/default/custom.less b/style/themes/default/custom.less
index 1cc0a50563..1d56540981 100644
--- a/style/themes/default/custom.less
+++ b/style/themes/default/custom.less
@@ -107,8 +107,8 @@
 // Form
 // --------------------------------
 // Legend
-@legend-color                : #222;
-@legend-border-color         : #e5e5e5;
+@legend-color                : #999;
+@legend-border-color         : #d9d9d9;
 // Label
 @label-required-color        : #F60;
 @label-color: #999;