diff --git a/lib/std/c.zig b/lib/std/c.zig
index e7b62f6728811704e5dfb9a332e50b4e032941b5..ebc3b1867d9cf4d065c4045d88e0371cde40e41e 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -9770,11 +9770,11 @@ pub extern "c" fn freeaddrinfo(res: *addrinfo) void;
 pub extern "c" fn getnameinfo(
     noalias addr: *const sockaddr,
     addrlen: socklen_t,
-    noalias host: [*]u8,
+    noalias host: ?[*]u8,
     hostlen: socklen_t,
-    noalias serv: [*]u8,
+    noalias serv: ?[*]u8,
     servlen: socklen_t,
-    flags: u32,
+    flags: NI,
 ) EAI;
 
 pub extern "c" fn gai_strerror(errcode: EAI) [*:0]const u8;