diff --git a/pkgs/development/libraries/qt-5/5.8/qttools/default.nix b/pkgs/development/libraries/qt-5/5.8/qttools/default.nix
index 6c0f540e79b6..8c231271607c 100644
--- a/pkgs/development/libraries/qt-5/5.8/qttools/default.nix
+++ b/pkgs/development/libraries/qt-5/5.8/qttools/default.nix
@@ -7,7 +7,8 @@ qtSubmodule {
   qtInputs = [ qtbase ];
   outputs = [ "out" "dev" "bin" ];
   patches = copyPathsToStore (readPathsFromFile ./. ./series);
-  postInstall = ''
+  # qmake moves all binaries to $dev in preFixup
+  postFixup = ''
     moveToOutput "bin/qdbus" "$bin"
     moveToOutput "bin/qtpaths" "$bin"
   '';