1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index aa192e9..8690e3e 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,7 @@ with open("document.docx", "rb") as docx_file:
     messages = result.messages # Any messages, such as warnings during conversion
 ```
 
-### Custom style map
+#### Custom style map
 
 By default,
 Mammoth maps some common .docx styles to HTML elements.