diff --git a/src/less/lib/constant.less b/src/less/lib/constant.less
index eed7d0336..bada9c000 100644
--- a/src/less/lib/constant.less
+++ b/src/less/lib/constant.less
@@ -3,6 +3,7 @@
 //classified
 
 //
+@font-size-10: 10px;
 @font-size-12: 12px;
 @font-size-13: 13px;
 @font-size-14: 14px;