diff --git a/pkgs/tools/inputmethods/fcitx/fcitx-qt5.nix b/pkgs/tools/inputmethods/fcitx/fcitx-qt5.nix
index ad5b46694981..3fd1efcc3434 100644
--- a/pkgs/tools/inputmethods/fcitx/fcitx-qt5.nix
+++ b/pkgs/tools/inputmethods/fcitx/fcitx-qt5.nix
@@ -21,15 +21,15 @@ mkDerivation rec {
 
   buildInputs = [ fcitx qtbase ];
 
-  preInstall = ''
-    substituteInPlace platforminputcontext/cmake_install.cmake \
-      --replace ${qtbase.bin} $out
-    substituteInPlace quickphrase-editor/cmake_install.cmake \
-      --replace ${fcitx} $out
+  preConfigure = ''
+    substituteInPlace platforminputcontext/CMakeLists.txt \
+      --replace \$"{CMAKE_INSTALL_QTPLUGINDIR}" $out/${qtbase.qtPluginPrefix}
+    substituteInPlace quickphrase-editor/CMakeLists.txt \
+      --replace \$"{FCITX4_ADDON_INSTALL_DIR}" $out/lib/fcitx
   '';
 
   meta = with lib; {
-    homepage    = https://gitlab.com/fcitx/fcitx-qt5;
+    homepage    = "https://gitlab.com/fcitx/fcitx-qt5";
     description = "Qt5 IM Module for Fcitx";
     license     = licenses.gpl2;
     platforms   = platforms.linux;