diff --git a/lib/nbsd_libc/sys-minix/compat.S b/lib/nbsd_libc/sys-minix/compat.S
index 8f69849dc..a364071ec 100644
--- a/lib/nbsd_libc/sys-minix/compat.S
+++ b/lib/nbsd_libc/sys-minix/compat.S
@@ -84,3 +84,4 @@ MY_ALIAS(getutmp, __getutmp50)
 MY_ALIAS(getutmpx, __getutmpx50)
 MY_ALIAS(utime, __utime50)
 MY_ALIAS(unvis, __unvis13)
+MY_ALIAS(pwcache_userdb, __pwcache_userdb50)