diff --git a/pkgs/applications/editors/emacs/macport-24.5.nix b/pkgs/applications/editors/emacs/macport-24.5.nix
index 885538dc8837..4a07bd2a0c80 100644
--- a/pkgs/applications/editors/emacs/macport-24.5.nix
+++ b/pkgs/applications/editors/emacs/macport-24.5.nix
@@ -1,5 +1,6 @@
 { stdenv, fetchurl, ncurses, pkgconfig, texinfo, libxml2, gnutls, gettext
 , AppKit, Carbon, Cocoa, IOKit, OSAKit, Quartz, QuartzCore, WebKit
+, autoconf, automake
 , ImageCaptureCore, GSS, ImageIO # These may be optional
 }:
 
@@ -21,7 +22,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  buildInputs = [ ncurses libxml2 gnutls pkgconfig texinfo gettext ];
+  buildInputs = [ ncurses libxml2 gnutls pkgconfig texinfo gettext autoconf automake ];
 
   propagatedBuildInputs = [
     AppKit Carbon Cocoa IOKit OSAKit Quartz QuartzCore WebKit