diff --git a/postgresql/README.md b/postgresql/README.md
index 84e5511..92f3e6c 100644
--- a/postgresql/README.md
+++ b/postgresql/README.md
@@ -47,7 +47,7 @@ easier to protect), make the aforementioned option explicitly empty and
 uncomment it:
 
 ```
-listen_addresses =
+listen_addresses = ''
 ```
 
 Check these options to make sure the socket is placed in the right spot and