diff --git a/build/less/core.less b/build/less/core.less
index 2a477f81ff4d3524465fbaa57c073699fe8b1d40..0595ae496040820d7e96db6d220c24530c186547 100644
--- a/build/less/core.less
+++ b/build/less/core.less
@@ -47,7 +47,7 @@ body {
 .main-footer {
   //Using disposable variable to join statements with a comma
   @transition-rule: @transition-speed @transition-fn,
-                    margin @transition-speed @transition-fn;
+    margin @transition-speed @transition-fn;
   .transition-transform(@transition-rule);
   margin-left: @sidebar-width;
   z-index: 820;