diff --git a/tools/windows/run_unittests.sh b/tools/windows/run_unittests.sh
index 88c8ba3dab9f6f05a3e164f2ecf7e9a74969fa80..d961bd9a7159fe331c0d4f9f93b82931f43e911a 100644
--- a/tools/windows/run_unittests.sh
+++ b/tools/windows/run_unittests.sh
@@ -354,7 +354,7 @@ if [ "${WITH_GPU:-OFF}" == "ON" ];then
             exit 8;
         fi
     fi
-    run_unittest_gpu $cpu_parallel_job 12
+    run_unittest_gpu $cpu_parallel_job 10
     run_unittest_gpu $tetrad_parallel_job 4
     run_unittest_gpu $two_parallel_job 2
     run_unittest_gpu $non_parallel_job