diff --git a/pkgs/servers/sql/percona/5.6.x.nix b/pkgs/servers/sql/percona/5.6.x.nix
index 7f8f0786e038..860c1f8e94f7 100644
--- a/pkgs/servers/sql/percona/5.6.x.nix
+++ b/pkgs/servers/sql/percona/5.6.x.nix
@@ -38,6 +38,7 @@ stdenv.mkDerivation rec {
     "-DINSTALL_SHAREDIR=share/mysql"
   ];
 
+  NIX_CFLAGS_COMPILE = [ "-Wno-error=address-of-packed-member" ];
   NIX_LDFLAGS = "-lgcc_s";
 
   prePatch = ''