diff --git a/auth-pam.c b/auth-pam.c
index 7cf9cf5fc..f80278c3a 100644
--- a/auth-pam.c
+++ b/auth-pam.c
@@ -68,9 +68,9 @@
 
 /* OpenGroup RFC86.0 and XSSO specify no "const" on arguments */
 #ifdef PAM_SUN_CODEBASE
-# define sshpam_const		/* Solaris, HP-UX, AIX */
+# define sshpam_const		/* Solaris, HP-UX, SunOS */
 #else
-# define sshpam_const	const	/* LinuxPAM, OpenPAM */
+# define sshpam_const	const	/* LinuxPAM, OpenPAM, AIX */
 #endif
 
 /* Ambiguity in spec: is it an array of pointers or a pointer to an array? */