diff --git a/core/Makefile b/core/Makefile
index 1406c6e09..265a36663 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -79,7 +79,7 @@ test: ## run unit tests
 	cd tests ; ./run_tests.sh $(TESTOPTS)
 
 test_rust: ## run rs unit tests
-	cd embed/rust ; cargo test -- --test-threads=1
+	cd embed/rust ; cargo test --features test -- --test-threads=1
 
 test_emu: ## run selected device tests from python-trezor
 	$(EMU_TEST) $(PYTEST) $(TESTPATH)/device_tests $(TESTOPTS)