diff --git a/pkgs/servers/memcached/default.nix b/pkgs/servers/memcached/default.nix
index 58276ff8632..b6c6031f150 100644
--- a/pkgs/servers/memcached/default.nix
+++ b/pkgs/servers/memcached/default.nix
@@ -17,7 +17,8 @@ stdenv.mkDerivation rec {
 
   hardeningEnable = [ "pie" ];
 
-  NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.isDarwin "-Wno-error";
+  NIX_CFLAGS_COMPILE = [ "-Wno-error=deprecated-declarations" ]
+    ++ stdenv.lib.optional stdenv.isDarwin "-Wno-error";
 
   meta = with stdenv.lib; {
     description = "A distributed memory object caching system";