diff --git a/pkgs/applications/editors/emacs/default.nix b/pkgs/applications/editors/emacs/default.nix
index c1bfdf8157d..e95d2b61535 100644
--- a/pkgs/applications/editors/emacs/default.nix
+++ b/pkgs/applications/editors/emacs/default.nix
@@ -1,7 +1,7 @@
 { stdenv, lib, fetchurl, ncurses, xlibsWrapper, libXaw, libXpm, Xaw3d
 , pkgconfig, gettext, libXft, dbus, libpng, libjpeg, libungif
 , libtiff, librsvg, gconf, libxml2, imagemagick, gnutls, libselinux
-, alsaLib, cairo, acl, gpm, AppKit, GSS, ImageIO, m17n_lib, libotf
+, alsaLib, cairo, acl, gpm, cf-private, AppKit, GSS, ImageIO, m17n_lib, libotf
 , systemd ? null
 , withX ? !stdenv.isDarwin
 , withNS ? stdenv.isDarwin
@@ -64,9 +64,12 @@ stdenv.mkDerivation rec {
     ++ lib.optional (withX && withGTK2) gtk2-x11
     ++ lib.optionals (withX && withGTK3) [ gtk3-x11 gsettings-desktop-schemas ]
     ++ lib.optional (stdenv.isDarwin && withX) cairo
-    ++ lib.optionals (withX && withXwidgets) [ webkitgtk ];
-
-  propagatedBuildInputs = lib.optionals withNS [ AppKit GSS ImageIO ];
+    ++ lib.optionals (withX && withXwidgets) [ webkitgtk ]
+    ++ lib.optionals withNS [
+      AppKit GSS ImageIO
+      # Needed for CFNotificationCenterAddObserver symbols.
+      cf-private
+    ];
 
   hardeningDisable = [ "format" ];
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 798b7a29ad3..2cc9beb895f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -16313,6 +16313,7 @@ with pkgs;
     imagemagick = null;
     acl = null;
     gpm = null;
+    inherit (darwin) cf-private;
     inherit (darwin.apple_sdk.frameworks) AppKit GSS ImageIO;
   };