diff --git a/packages/theme-chalk/src/tag.scss b/packages/theme-chalk/src/tag.scss
index 162290206..5a83f8b69 100644
--- a/packages/theme-chalk/src/tag.scss
+++ b/packages/theme-chalk/src/tag.scss
@@ -124,11 +124,11 @@
   }
 
   @include m(dark) {
-    @include genTheme(100%, 100%, 0, 80%);
+    @include genTheme(100%, 100%, 0%, 80%);
   }
 
   @include m(plain) {
-    @include genTheme(0, 40%, 100%, 100%);
+    @include genTheme(0%, 40%, 100%, 100%);
   }
 
   @include m(medium) {