diff --git a/pkgs/development/libraries/qt-5/5.11/default.nix b/pkgs/development/libraries/qt-5/5.11/default.nix
index 57300878e49d..65a1d0b9bef5 100644
--- a/pkgs/development/libraries/qt-5/5.11/default.nix
+++ b/pkgs/development/libraries/qt-5/5.11/default.nix
@@ -20,6 +20,7 @@ top-level attribute to `top-level/all-packages.nix`.
   stdenv, fetchurl, fetchFromGitHub, makeSetupHook,
   bison, cups ? null, harfbuzz, libGL, perl,
   gstreamer, gst-plugins-base, gtk3, dconf,
+  cf-private,
 
   # options
   developerBuild ? false,
@@ -95,7 +96,9 @@ let
       qtgraphicaleffects = callPackage ../modules/qtgraphicaleffects.nix {};
       qtimageformats = callPackage ../modules/qtimageformats.nix {};
       qtlocation = callPackage ../modules/qtlocation.nix {};
-      qtmacextras = callPackage ../modules/qtmacextras.nix {};
+      qtmacextras = callPackage ../modules/qtmacextras.nix {
+        inherit cf-private;
+      };
       qtmultimedia = callPackage ../modules/qtmultimedia.nix {
         inherit gstreamer gst-plugins-base;
       };
diff --git a/pkgs/development/libraries/qt-5/5.9/default.nix b/pkgs/development/libraries/qt-5/5.9/default.nix
index 755e6a9487e7..fbf0001220b9 100644
--- a/pkgs/development/libraries/qt-5/5.9/default.nix
+++ b/pkgs/development/libraries/qt-5/5.9/default.nix
@@ -20,6 +20,7 @@ top-level attribute to `top-level/all-packages.nix`.
   stdenv, fetchurl, makeSetupHook,
   bison, cups ? null, harfbuzz, libGL, perl,
   gstreamer, gst-plugins-base, gtk3, dconf,
+  cf-private,
 
   # options
   developerBuild ? false,
@@ -78,7 +79,9 @@ let
       qtgraphicaleffects = callPackage ../modules/qtgraphicaleffects.nix {};
       qtimageformats = callPackage ../modules/qtimageformats.nix {};
       qtlocation = callPackage ../modules/qtlocation.nix {};
-      qtmacextras = callPackage ../modules/qtmacextras.nix {};
+      qtmacextras = callPackage ../modules/qtmacextras.nix {
+        inherit cf-private;
+      };
       qtmultimedia = callPackage ../modules/qtmultimedia.nix {
         inherit gstreamer gst-plugins-base;
       };
diff --git a/pkgs/development/libraries/qt-5/modules/qtmacextras.nix b/pkgs/development/libraries/qt-5/modules/qtmacextras.nix
index 5a3b1fe35cd8..3f254885986e 100644
--- a/pkgs/development/libraries/qt-5/modules/qtmacextras.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtmacextras.nix
@@ -1,9 +1,11 @@
-{ qtModule, qtbase, lib }:
+{ stdenv, qtModule, qtbase, cf-private }:
 
 qtModule {
   name = "qtmacextras";
-  qtInputs = [ qtbase ];
-  meta = with lib; {
+  qtInputs = [ qtbase ]
+    # Needed for _OBJC_CLASS_$_NSData symbols.
+    ++ stdenv.lib.optional stdenv.isDarwin cf-private;
+  meta = with stdenv.lib; {
     maintainers = with maintainers; [ periklis ];
     platforms = platforms.darwin;
   };
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index a3fb6d7dcb50..222a12dd5798 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -11947,6 +11947,7 @@ with pkgs;
       harfbuzz = harfbuzzFull;
       inherit libGL;
       inherit perl;
+      inherit (darwin) cf-private;
       inherit (gst_all_1) gstreamer gst-plugins-base;
       inherit (gnome3) gtk3 dconf;
     });
@@ -11962,8 +11963,9 @@ with pkgs;
       harfbuzz = harfbuzzFull;
       inherit libGL;
       inherit perl;
-      inherit (gst_all_1) gstreamer gst-plugins-base;
+      inherit (darwin) cf-private;
       inherit (gnome3) gtk3 dconf;
+      inherit (gst_all_1) gstreamer gst-plugins-base;
     });
 
   libsForQt511 = recurseIntoAttrs (lib.makeScope qt511.newScope mkLibsForQt5);