diff --git a/pkgs/tools/X11/caffeine-ng/default.nix b/pkgs/tools/X11/caffeine-ng/default.nix
index 57f32ed8225..93f180df52b 100644
--- a/pkgs/tools/X11/caffeine-ng/default.nix
+++ b/pkgs/tools/X11/caffeine-ng/default.nix
@@ -18,6 +18,8 @@ pythonPackages.buildPythonApplication rec {
     setproctitle setuptools setuptools_scm wheel
   ];
 
+  doCheck = false; # There are no tests.
+
   postBuild = ''
     mkdir -p $out/share
     cp -r share $out/