1 files changed, 4 insertions, 0 deletions
diff --git a/USAGE b/USAGE
index 48f49b4..d2694f3 100644
--- a/USAGE
+++ b/USAGE
@@ -91,5 +91,9 @@ prompt=string  - Specifies the prompt, without the ': ', that PAM should
                  relevant string different from Password) in this
                  situation.
 
+max_challenge=# - configure maximum number of challenges that a server
+                  may request. This is a workaround for broken servers
+                  and disabled by default.
+
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