diff --git a/libc/dns/dns.h b/libc/dns/dns.h
index 6bc2a285b..de9f8722e 100644
--- a/libc/dns/dns.h
+++ b/libc/dns/dns.h
@@ -47,7 +47,9 @@ struct addrinfo {
 int getaddrinfo(const char *, const char *, const struct addrinfo *,
                 struct addrinfo **) paramsnonnull((4));
 int freeaddrinfo(struct addrinfo *);
+const char *gai_strerror(int errcode);
 const char *eai2str(int);
+#define gai_strerror        eai2str
 int dnsnamecmp(const char *, const char *) paramsnonnull();
 int pascalifydnsname(uint8_t *, size_t, const char *) paramsnonnull();
 int resolvedns(const struct ResolvConf *, int, const char *, struct sockaddr *,