diff --git a/scripts/setup_rust_fork.sh b/scripts/setup_rust_fork.sh
index 532702bb1a46..492f4dc44527 100644
--- a/scripts/setup_rust_fork.sh
+++ b/scripts/setup_rust_fork.sh
@@ -33,6 +33,7 @@ rustc = "$(pwd)/../dist/bin/rustc-clif"
 cargo = "$(rustup which cargo)"
 full-bootstrap = true
 local-rebuild = true
+compiletest-allow-stage0 = true
 
 [rust]
 download-rustc = false
diff --git a/scripts/test_rustc_tests.sh b/scripts/test_rustc_tests.sh
index 7e356b4b462b..52e02c857c7a 100755
--- a/scripts/test_rustc_tests.sh
+++ b/scripts/test_rustc_tests.sh
@@ -166,5 +166,5 @@ index 073116933bd..c3e4578204d 100644
 EOF
 
 echo "[TEST] rustc test suite"
-COMPILETEST_FORCE_STAGE0=1 ./x.py test --stage 0 --test-args=--no-capture tests/{codegen-units,run-make,ui,incremental}
+./x.py test --stage 0 --test-args=--no-capture tests/{codegen-units,run-make,ui,incremental}
 popd