diff --git a/pkgs/applications/audio/polyphone/default.nix b/pkgs/applications/audio/polyphone/default.nix
index 568f3b6ba151b..f7008bf66bba9 100644
--- a/pkgs/applications/audio/polyphone/default.nix
+++ b/pkgs/applications/audio/polyphone/default.nix
@@ -36,7 +36,6 @@ mkDerivation rec {
   qmakeFlags = [
     "DEFINES+=USE_LOCAL_STK"
     "DEFINES+=USE_LOCAL_QCUSTOMPLOT"
-    "INCLUDEPATH+=${libjack2}/include/jack"
   ];
 
   meta = with lib; {