diff --git a/jsy.lessconfig.json b/jsy.lessconfig.json
index 1e365bfc3..da0ee54b4 100644
--- a/jsy.lessconfig.json
+++ b/jsy.lessconfig.json
@@ -1,13 +1,13 @@
 {
-  "font-color-normal": "#031b4e",
-  "font-color-highlight": "#305bd3",
-  "font-color-light-gray": "#0d1540",
-  "font-color-disabled": "fade(#031b4e, 40)",
-  "font-color-light-disabled": "fade(#0d1540, 20)",
+  "@font-color-normal": "#031b4e",
+  "@font-color-highlight": "#305bd3",
+  "@font-color-light-gray": "#0d1540",
+  "@font-color-disabled": "fade(#031b4e, 40)",
+  "@font-color-light-disabled": "fade(#0d1540, 20)",
 
-  "background-color-highlight": "#305bd3",
-  "background-color-light-disabled": "fade(#0d1540, 5)",
+  "@background-color-highlight": "#305bd3",
+  "@background-color-light-disabled": "fade(#0d1540, 5)",
 
-  "border-color-highlight": "#305bd3",
-  "border-color-disabled": "#e8eaed"
+  "@border-color-highlight": "#305bd3",
+  "@border-color-disabled": "#e8eaed"
 }
\ No newline at end of file