diff --git a/doc/src/body.txt b/doc/src/body.txt
index 54ec157c74..344e5b1d65 100644
--- a/doc/src/body.txt
+++ b/doc/src/body.txt
@@ -6,7 +6,7 @@
 
 :line
 
-Body particles :h3
+Body particles :h1
 
 [Overview:]
 
diff --git a/doc/src/manifolds.txt b/doc/src/manifolds.txt
index c9bb1ce57f..36c6caacb7 100644
--- a/doc/src/manifolds.txt
+++ b/doc/src/manifolds.txt
@@ -6,7 +6,7 @@
 
 :line
 
-Manifolds (surfaces) :h3
+Manifolds (surfaces) :h1
 
 [Overview:]