diff --git a/pkgs/applications/audio/keyfinder/default.nix b/pkgs/applications/audio/keyfinder/default.nix
index 6aaf14a5763..f011e909052 100644
--- a/pkgs/applications/audio/keyfinder/default.nix
+++ b/pkgs/applications/audio/keyfinder/default.nix
@@ -2,10 +2,10 @@
 
 stdenv.mkDerivation rec {
   name = "keyfinder-${version}";
-  version = "2.1";
+  version = "2.2";
 
   src = fetchFromGitHub {
-    sha256 = "0j9k90ll4cr8j8dywb6zf1bs9vijlx7m4zsh6w9hxwrr7ymz89hn";
+    sha256 = "0vjszk1h8vj2qycgbffzy6k7amg75jlvlnzwaqhz9nll2pcvw0zl";
     rev = version;
     repo = "is_KeyFinder";
     owner = "ibsh";
@@ -17,7 +17,8 @@ stdenv.mkDerivation rec {
   postPatch = ''
     substituteInPlace is_KeyFinder.pro \
        --replace "keyfinder.0" "keyfinder" \
-       --replace "-stdlib=libc++" ""
+       --replace "-stdlib=libc++" "" \
+       --replace "\$\$[QT_INSTALL_PREFIX]" "$out"
   '';
 
   enableParallelBuilding = true;