diff --git a/pkgs/applications/blockchains/whirlpool-gui/default.nix b/pkgs/applications/blockchains/whirlpool-gui/default.nix
index c26270beef61..62c7c3b3da47 100644
--- a/pkgs/applications/blockchains/whirlpool-gui/default.nix
+++ b/pkgs/applications/blockchains/whirlpool-gui/default.nix
@@ -19,7 +19,7 @@ in stdenv.mkDerivation rec {
   yarnCache = stdenv.mkDerivation {
     name = "${pname}-${version}-${system}-yarn-cache";
     inherit src;
-    phases = [ "unpackPhase" "buildPhase" ];
+    dontInstall = true;
     nativeBuildInputs = [ yarn ];
     buildPhase = ''
       export HOME=$NIX_BUILD_ROOT