diff --git a/assets/sass/_theme/blocks/chapter.sass b/assets/sass/_theme/blocks/chapter.sass
index e4ebe344b8f69c85a26555d497b502d253abcc10..059d9c45adf26d115f5f967177ed2bc595520d4d 100644
--- a/assets/sass/_theme/blocks/chapter.sass
+++ b/assets/sass/_theme/blocks/chapter.sass
@@ -5,6 +5,9 @@
         margin-top: $spacing1
         *
             @include small
+        sub, sup
+            font-size: 60%
+            margin-left: 0
     picture, img
         display: block
     figcaption