diff --git a/app/assets/stylesheets/mobile/discourse.scss b/app/assets/stylesheets/mobile/discourse.scss
index e64856cc367..c91e1853156 100644
--- a/app/assets/stylesheets/mobile/discourse.scss
+++ b/app/assets/stylesheets/mobile/discourse.scss
@@ -5,7 +5,13 @@
 
 // Base Elements
 html {
-  font-size: 15px; // Increasing overall font-size on mobile by 1px
+  font-size: $base-font-size + 1; // Increasing overall font-size on mobile by 1px
+  &.text-size-larger {
+    font-size: $base-font-size-larger + 1;
+  }
+  &.text-size-largest {
+    font-size: $base-font-size-largest + 1;
+  }
 }
 
 body {