diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 5cae39ec24..53f93ef961 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1293,7 +1293,8 @@ const char *small_strptime(const char *p, const char *fmt,
                            struct tm *dt);
 
 struct in_addr;
-int resolve_host(struct in_addr *sin_addr, const char *hostname);
+/* Deprecated, use getaddrinfo instead. */
+attribute_deprecated int resolve_host(struct in_addr *sin_addr, const char *hostname);
 
 void url_split(char *proto, int proto_size,
                char *authorization, int authorization_size,