diff --git a/gnu/packages/kde-frameworks.scm b/gnu/packages/kde-frameworks.scm
index 6a46f28684..59022f3f03 100644
--- a/gnu/packages/kde-frameworks.scm
+++ b/gnu/packages/kde-frameworks.scm
@@ -104,7 +104,11 @@
                 "_define_relative(QTQUICKIMPORTSDIR LIBDIR \"qt5/imports\"")
                ;; Install qml-files into lib/qt5/qml
                (("_define_relative\\(QMLDIR LIBDIR \"qml\"")
-                "_define_relative(QMLDIR LIBDIR \"qt5/qml\""))))
+                "_define_relative(QMLDIR LIBDIR \"qt5/qml\""))
+             (substitute* "modules/ECMGeneratePriFile.cmake"
+               ;; Install pri-files into lib/qt5/mkspecs
+               (("set\\(ECM_MKSPECS_INSTALL_DIR mkspecs/modules")
+                "set(ECM_MKSPECS_INSTALL_DIR lib/qt5/mkspecs/modules"))))
          ;; install and check phase are swapped to prevent install from failing
          ;; after testsuire has run
          (add-after 'install 'check-post-install