diff --git a/README.md b/README.md
index 7a500ac90..4359e5b76 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 GTFS data quality reports for California transit providers
 
-## Repository structure
+#### Repository structure
 
 This repository is set up in two pieces: