diff --git a/libc/cmake/modules/prepare_libc_gpu_build.cmake b/libc/cmake/modules/prepare_libc_gpu_build.cmake
index 377bc4eeae8fc..f3ccbdc9eb15a 100644
--- a/libc/cmake/modules/prepare_libc_gpu_build.cmake
+++ b/libc/cmake/modules/prepare_libc_gpu_build.cmake
@@ -78,6 +78,9 @@ set(LIBC_GPU_TEST_JOBS "" CACHE STRING "Number of jobs to use for GPU tests")
 if(LIBC_GPU_TEST_JOBS)
   set_property(GLOBAL PROPERTY JOB_POOLS LIBC_GPU_TEST_POOL=${LIBC_GPU_TEST_JOBS})
   set(LIBC_HERMETIC_TEST_JOB_POOL JOB_POOL LIBC_GPU_TEST_POOL)
+else()
+  set_property(GLOBAL PROPERTY JOB_POOLS LIBC_GPU_TEST_POOL=1)
+  set(LIBC_HERMETIC_TEST_JOB_POOL JOB_POOL LIBC_GPU_TEST_POOL)
 endif()
 
 set(LIBC_GPU_TEST_ARCHITECTURE "" CACHE STRING "Architecture for the GPU tests")