diff --git a/pkgs/servers/http/mini-httpd/default.nix b/pkgs/servers/http/mini-httpd/default.nix
index 4cba9bc06687..5425ffb919f4 100644
--- a/pkgs/servers/http/mini-httpd/default.nix
+++ b/pkgs/servers/http/mini-httpd/default.nix
@@ -8,6 +8,8 @@ stdenv.mkDerivation rec {
     sha256 = "1x4b6x40ymbaamqqq9p97lc0mnah4q7bza04fjs35c8agpm19zir";
   };
 
+  configureFlagsArray = [ "CFLAGS=-ansi" ];
+
   buildInputs = [ boost ];
 
   enableParallelBuilding = true;