diff --git a/pkgs/development/libraries/qt-5/5.5/qtxmlpatterns.nix b/pkgs/development/libraries/qt-5/5.5/qtxmlpatterns.nix
index 9a8ddbba2bd2..3b22132e4c38 100644
--- a/pkgs/development/libraries/qt-5/5.5/qtxmlpatterns.nix
+++ b/pkgs/development/libraries/qt-5/5.5/qtxmlpatterns.nix
@@ -3,4 +3,7 @@
 qtSubmodule {
   name = "qtxmlpatterns";
   qtInputs = [ qtbase ];
+  postFixup = ''
+    fixQtModuleCMakeConfig "XmlPatterns"
+  '';
 }