diff --git a/less/variables.less b/less/variables.less
index 86d53e629b..5610236f38 100644
--- a/less/variables.less
+++ b/less/variables.less
@@ -322,17 +322,17 @@
 //## Define the maximum width of `.container` for different screen sizes.
 
 // Small screen / tablet
-@container-tablet:             ((720px + @grid-gutter-width));
+@container-tablet:             (720px + @grid-gutter-width);
 //** For `@screen-sm-min` and up.
 @container-sm:                 @container-tablet;
 
 // Medium screen / desktop
-@container-desktop:            ((940px + @grid-gutter-width));
+@container-desktop:            (940px + @grid-gutter-width);
 //** For `@screen-md-min` and up.
 @container-md:                 @container-desktop;
 
 // Large screen / wide desktop
-@container-large-desktop:      ((1140px + @grid-gutter-width));
+@container-large-desktop:      (1140px + @grid-gutter-width);
 //** For `@screen-lg-min` and up.
 @container-lg:                 @container-large-desktop;