diff --git a/examples/etc/turnserver.conf b/examples/etc/turnserver.conf
index 5f3b1f4..590d7ef 100644
--- a/examples/etc/turnserver.conf
+++ b/examples/etc/turnserver.conf
@@ -713,7 +713,6 @@
 # the TURN client allocation request connection address family.
 #
 #allocation-default-address-family="ipv4"
-#allocation-default-address-family="ipv4"
 
 # User name to run the process. After the initialization, the turnserver process
 # will attempt to change the current user ID to that user.