diff --git a/INSTALL b/INSTALL
index 9754e2179..53fe939ea 100644
--- a/INSTALL
+++ b/INSTALL
@@ -61,7 +61,7 @@ PAM:
 
 OpenSSH can utilise Pluggable Authentication Modules (PAM) if your
 system supports it. PAM is standard most Linux distributions, Solaris,
-HP-UX 11, AIX >= 5.2, FreeBSD and NetBSD.
+HP-UX 11, AIX >= 5.2, FreeBSD, NetBSD and Mac OS X.
 
 Information about the various PAM implementations are available: