diff --git a/pkgs/development/libraries/audio/libbass/default.nix b/pkgs/development/libraries/audio/libbass/default.nix
index 49a3a5478cff..ab97090e8899 100644
--- a/pkgs/development/libraries/audio/libbass/default.nix
+++ b/pkgs/development/libraries/audio/libbass/default.nix
@@ -15,7 +15,7 @@ let
         x86_64-linux = "x64/libbass.so";
       };
       urlpath = "bass24-linux.zip";
-      sha256 = "1ycvpfa7yyi1qxgflpfzcw1q32f0isd14m9cf351pk8zwndkmp4q";
+      sha256 = "1lmysxfhy727zskavml3ibg5w876ir88923bm17c21s59w5lh7l8";
     };
 
     bass_fx = {
diff --git a/pkgs/tools/misc/ultrastar-manager/default.nix b/pkgs/tools/misc/ultrastar-manager/default.nix
index f69955020c72..d5dd47e0f669 100644
--- a/pkgs/tools/misc/ultrastar-manager/default.nix
+++ b/pkgs/tools/misc/ultrastar-manager/default.nix
@@ -27,7 +27,8 @@ let
     in mkDerivation {
       name = "${src.name}-patched";
       inherit src;
-      phases = [ "unpackPhase" "patchPhase" ];
+
+      dontInstall = true;
 
       patchPhase = with lib; ''
         # we don’t want prebuild binaries checked into version control!