diff --git a/pkgs/applications/editors/emacs-25/default.nix b/pkgs/applications/editors/emacs-25/default.nix
index 019015785e64..e591a48781a0 100644
--- a/pkgs/applications/editors/emacs-25/default.nix
+++ b/pkgs/applications/editors/emacs-25/default.nix
@@ -53,6 +53,8 @@ stdenv.mkDerivation rec {
 
   propagatedBuildInputs = stdenv.lib.optionals stdenv.isDarwin [ AppKit GSS ImageIO ];
 
+  hardeningDisable = [ "format" ];
+
   configureFlags =
     if stdenv.isDarwin
       then [ "--with-ns" "--disable-ns-self-contained" ]