diff --git a/frontend/less/espo-vertical/variables.less b/frontend/less/espo-vertical/variables.less
index 448cbd71e5..1522dbd100 100644
--- a/frontend/less/espo-vertical/variables.less
+++ b/frontend/less/espo-vertical/variables.less
@@ -1,7 +1,7 @@
 @navbar-width: 210px;
 @navbar-header-height: 65px;
 @navbar-logo-height: 37px;
-@navbar-header-vertical-padding: (@navbar-header-height - @navbar-logo-height) / 2;
+@navbar-header-vertical-padding: ((@navbar-header-height - @navbar-logo-height) / 2);
 
 @navbar-minimized-width: 42px;
 @tob-bar-height: 30px;