diff --git a/pkgs/development/libraries/qt-5/5.5/qtwebkit/default.nix b/pkgs/development/libraries/qt-5/5.5/qtwebkit/default.nix
index 2e92391f4c08..b441a2448d76 100644
--- a/pkgs/development/libraries/qt-5/5.5/qtwebkit/default.nix
+++ b/pkgs/development/libraries/qt-5/5.5/qtwebkit/default.nix
@@ -31,4 +31,8 @@ qtSubmodule {
         };
     in optionals flashplayerFix [ dlopen-webkit-nsplugin dlopen-webkit-gtk ]
     ++ [ dlopen-webkit-udev ];
+  postFixup = ''
+    fixQtModuleCMakeConfig "WebKit"
+    fixQtModuleCMakeConfig "WebKitWidgets"
+  '';
 }