diff --git a/components/style/themes/default.less b/components/style/themes/default.less
index 5e2cf0c430..53224070ff 100644
--- a/components/style/themes/default.less
+++ b/components/style/themes/default.less
@@ -33,7 +33,7 @@
 @disabled-color         : fade(#000, 25%);
 @heading-color-dark     : fade(#fff, 97%);
 @text-color-dark        : fade(#fff, 91%);
-@text-color-secondary-dark : fade(#fff, 57%);
+@text-color-secondary-dark: fade(#fff, 57%);
 @disabled-color-dark    : fade(#000, 35%);
 @font-size-base         : 12px;
 @font-size-lg           : @font-size-base + 2px;