diff --git a/semantic/src/themes/default/globals/site.variables b/semantic/src/themes/default/globals/site.variables
index 6b890b10..e4dfaf49 100644
--- a/semantic/src/themes/default/globals/site.variables
+++ b/semantic/src/themes/default/globals/site.variables
@@ -34,7 +34,7 @@
 @emSize   : 12pt;
 
 /* The size of page text  */
-@fontSize : 12pt;
+@fontSize : @emSize;
 
 
 /*-------------------