diff --git a/src/Types.hs b/src/Types.hs
index 615c401..a41e38b 100644
--- a/src/Types.hs
+++ b/src/Types.hs
@@ -105,10 +105,10 @@ data DocMarkup mod id
     -}
     DocMathInline String
   | {- | Math multiline display
-    \[
+      \[
       mathematical expression
       in multiple lines
-    \]
+      \]
     -}
     DocMathDisplay String
   | {- | Anchors, no spaces allowed