diff --git a/src/Orchard.Web/Themes/TheThemeMachine/Styles/Site.css b/src/Orchard.Web/Themes/TheThemeMachine/Styles/Site.css
index fc59d7d89..e51a40030 100644
--- a/src/Orchard.Web/Themes/TheThemeMachine/Styles/Site.css
+++ b/src/Orchard.Web/Themes/TheThemeMachine/Styles/Site.css
@@ -120,10 +120,10 @@ body {
 /* Headings */
 h1,h2,h3,h4,h5,h6 { font-weight: normal; margin:.6em 0;}
 
-h1 { font-size: 1.231em; }
-h2 { font-size: 1.154em; }
-h3 { font-size: 1.077em; }
-h4 { font-size: 1em; }
+h1 { font-size: 1.308em; }
+h2 { font-size: 1.231em; }
+h3 { font-size: 1.154em; }
+h4 { font-size: 1.077em; }
 h5 { font-size: 1em; }
 h6 { font-size: 1em; }