diff --git a/docs/conf.py b/docs/conf.py
index 0112c7cb..f0f9a51c 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -109,8 +109,9 @@ def _gen_checks_by_importance():
 """)
 
         for importance_level, checks in dd.items():
-            f.write(f"""{importance_level}
-{'-' * (len(f'{importance_level}') + 1)}
+            heading = f"{importance_level} ({len(checks)})"
+            f.write(f"""{heading}
+{'-' * len(heading)}
 
 """)