diff --git a/less/mixins/grid.less b/less/mixins/grid.less
index f144c15f46..df496d0b3c 100644
--- a/less/mixins/grid.less
+++ b/less/mixins/grid.less
@@ -6,8 +6,8 @@
 .container-fixed(@gutter: @grid-gutter-width) {
   margin-right: auto;
   margin-left: auto;
-  padding-left:  (@gutter / 2);
-  padding-right: (@gutter / 2);
+  padding-left:  floor((@gutter / 2));
+  padding-right: ceil((@gutter / 2));
   &:extend(.clearfix all);
 }