diff --git a/pkgs/applications/networking/flent/default.nix b/pkgs/applications/networking/flent/default.nix
index ed7e8ae9d6a..9b170735dcf 100644
--- a/pkgs/applications/networking/flent/default.nix
+++ b/pkgs/applications/networking/flent/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonApplication, fetchPypi, matplotlib, procps, pyqt5
+{ stdenv, buildPythonApplication, fetchPypi, matplotlib, procps, pyqt5, qt5
 , sphinx }:
 
 buildPythonApplication rec {
@@ -10,11 +10,18 @@ buildPythonApplication rec {
   };
 
   buildInputs = [ sphinx ];
+  nativeBuildInputs = [ qt5.wrapQtAppsHook ];
 
   checkInputs = [ procps ];
 
   propagatedBuildInputs = [ matplotlib procps pyqt5 ];
 
+  postInstall = ''
+    for program in $out/bin/*; do
+      wrapQtApp $program --prefix PYTHONPATH : $PYTHONPATH
+    done
+  '';
+
   meta = with stdenv.lib; {
     description = "The FLExible Network Tester";
     homepage = "https://flent.org";