diff --git a/tools/internal_ci/windows/grpc_portability_master.cfg b/tools/internal_ci/windows/grpc_portability_build_only.cfg
similarity index 93%
rename from tools/internal_ci/windows/grpc_portability_master.cfg
rename to tools/internal_ci/windows/grpc_portability_build_only.cfg
index c395cb4a949..b2b58ece2d7 100644
--- a/tools/internal_ci/windows/grpc_portability_master.cfg
+++ b/tools/internal_ci/windows/grpc_portability_build_only.cfg
@@ -26,5 +26,5 @@ action {
 
 env_vars {
   key: "RUN_TESTS_FLAGS"
-  value: "-f portability windows -j 1 --inner_jobs 8 --internal_ci"
+  value: "-f portability windows --internal_ci  --build_only"
 }