diff --git a/docs/firststeps-disable_ipv6.md b/docs/firststeps-disable_ipv6.md
index 1f0f86abf..f522d4d05 100644
--- a/docs/firststeps-disable_ipv6.md
+++ b/docs/firststeps-disable_ipv6.md
@@ -72,6 +72,7 @@ Create `data/conf/postfix/extra.cf` and set `smtp_address_preference` to `ipv4`:
 
 ```
 smtp_address_preference = ipv4
+inet_protocols = ipv4
 ```
 
 Restart Postfix:
diff --git a/docs/model-passwd.md b/docs/model-passwd.md
index 78c935e93..c06642039 100644
--- a/docs/model-passwd.md
+++ b/docs/model-passwd.md
@@ -1,4 +1,4 @@
-# Fully supported hashing methods
+## Fully supported hashing methods
 
 The most current mailcow fully supports the following hashing methods.
 The default hashing method is written in bold: