diff --git a/pkgs/applications/audio/musescore/default.nix b/pkgs/applications/audio/musescore/default.nix
index 1f3787712e3b..2ea999cbc290 100644
--- a/pkgs/applications/audio/musescore/default.nix
+++ b/pkgs/applications/audio/musescore/default.nix
@@ -88,6 +88,11 @@ stdenv.mkDerivation rec {
     qtx11extras
   ];
 
+  postInstall = ''
+    # Remove unneeded bundled libraries and headers
+    rm -r $out/{include,lib}
+  '';
+
   passthru.tests = nixosTests.musescore;
 
   meta = with lib; {