diff --git a/lib/libsys/Symbol.sys.map b/lib/libsys/Symbol.sys.map
index 7f70e03a5c2..5a4e66baf3c 100644
--- a/lib/libsys/Symbol.sys.map
+++ b/lib/libsys/Symbol.sys.map
@@ -379,6 +379,7 @@ FBSD_1.7 {
 };
 
 FBSD_1.8 {
+	getrlimitusage;
 	kcmp;
 };
 
diff --git a/sys/sys/resource.h b/sys/sys/resource.h
index d2803cccf38..2725aa1ef64 100644
--- a/sys/sys/resource.h
+++ b/sys/sys/resource.h
@@ -190,6 +190,9 @@ int	getrlimit(int, struct rlimit *);
 int	getrusage(int, struct rusage *);
 int	setpriority(int, int, int);
 int	setrlimit(int, const struct rlimit *);
+#if __BSD_VISIBLE
+int	getrlimitusage(unsigned which, int flags, rlim_t *res);
+#endif
 __END_DECLS
 
 #endif	/* _KERNEL */