diff --git a/README.turnutils b/README.turnutils
index 516219a..618800b 100644
--- a/README.turnutils
+++ b/README.turnutils
@@ -117,7 +117,7 @@ Flags:
 
 -Z	Dual allocation (SSODA draft support).
 
--J	Use oAuth.
+-J	Use oAuth with default test key kid='north'.
 
 Options with required values:  
 
diff --git a/man/man1/turnutils.1 b/man/man1/turnutils.1
index 1aec62a..179fbf7 100644
--- a/man/man1/turnutils.1
+++ b/man/man1/turnutils.1
@@ -178,7 +178,7 @@ Dual allocation (SSODA draft support).
 .TP
 .B
 \fB\-J\fP
-Use oAuth.
+Use oAuth with default test key kid='north'.
 .TP
 .B
 Options with required values:
diff --git a/src/apps/uclient/mainuclient.c b/src/apps/uclient/mainuclient.c
index ddc81de..3efc1f8 100644
--- a/src/apps/uclient/mainuclient.c
+++ b/src/apps/uclient/mainuclient.c
@@ -139,7 +139,7 @@ static char Usage[] =
   "	-G	Generate extra requests (create permissions, channel bind).\n"
   " -B  Random disconnect after a few initial packets.\n"
   " -Z  Dual allocation.\n"
-  " -J	Use oAuth.\n"
+  " -J	Use oAuth with default test key kid='north'.\n"
   "Options:\n"
   "	-l	Message length (Default: 100 Bytes).\n"
   "	-i	Certificate file (for secure connections only, optional).\n"