diff --git a/core/css/variables.scss b/core/css/variables.scss
index 64d9e3dca1..d1c9dfec52 100644
--- a/core/css/variables.scss
+++ b/core/css/variables.scss
@@ -29,7 +29,6 @@ $color-main-old-bbbbbb: rgb(198, 198, 198);
 $color-main-old-bebebe: rgb(190, 190, 190);
 $color-main-old-bbbbbb: #bbb;
 $color-main-old-aaaaaa: #aaa;
-$color-main-old-999999: #999;
 $color-main-old-969696: rgb(150, 150, 150);
 $color-main-old-888888: #888;
 $color-main-old-777777: #777;