diff --git a/zebra/zebra_fpm.h b/zebra/zebra_fpm.h
index 44dec02..ecd23c7 100644
--- a/zebra/zebra_fpm.h
+++ b/zebra/zebra_fpm.h
@@ -28,7 +28,8 @@
 /*
  * Externs.
  */
-extern int zfpm_init (struct thread_master *master, int enable, uint16_t port);
+extern int zfpm_init (struct thread_master *master, int enable, uint16_t port,
+		      const char *message_format);
 extern void zfpm_trigger_update (struct route_node *rn, const char *reason);
 
 #endif /* _ZEBRA_FPM_H */