Index: pam_ssh-1.91/pam_ssh.c
===================================================================
--- pam_ssh-1.91.orig/pam_ssh.c
+++ pam_ssh-1.91/pam_ssh.c
@@ -63,6 +63,7 @@
 #include <string.h>
 #include <sysexits.h>
 #include <unistd.h>
+#include <syslog.h>
 
 #define PAM_SM_AUTH
 #define PAM_SM_SESSION