Update params description of PIN Code Request
diff --git a/doc/mgmt-api.txt b/doc/mgmt-api.txt
index 45f6a64..353705e 100644
--- a/doc/mgmt-api.txt
+++ b/doc/mgmt-api.txt
@@ -484,6 +484,8 @@
 Event Parameters	Address (6 Octets)
 			Secure (1 Octet)
 
+	Secure: 0x01  secure PIN code required
+		0x00  secure PIN code not required
 
 User Confirmation Request Event
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