diff --git a/src/sass/_theme_rst.sass b/src/sass/_theme_rst.sass
index 3d7f58f5..8fdfdd35 100644
--- a/src/sass/_theme_rst.sass
+++ b/src/sass/_theme_rst.sass
@@ -52,6 +52,7 @@
     margin-left: $line-height-base
     line-height: $line-height-base
     margin-bottom: $line-height-base
+    font-size: $font-size-base
 
   pre.literal-block
     white-space: pre