diff --git a/core/_typography.scss b/core/_typography.scss
index 84a8d5a1..c572a134 100755
--- a/core/_typography.scss
+++ b/core/_typography.scss
@@ -12,7 +12,7 @@ h4,
 h5,
 h6 {
   font-family: $heading-font-family;
-  font-size: $base-font-size;
+  font-size: modular-scale(1);
   line-height: $heading-line-height;
   margin: 0 0 $small-spacing;
 }