diff --git a/Makefile b/Makefile
index e16f225a..9a322419 100644
--- a/Makefile
+++ b/Makefile
@@ -214,6 +214,8 @@ smoketest:
 	# test simulated boards on play.tinygo.org
 	$(TINYGO) build             -o test.wasm -tags=arduino              examples/blinky1
 	@$(MD5SUM) test.wasm
+	$(TINYGO) build             -o test.wasm -tags=hifive1-qemu         examples/serial
+	@$(MD5SUM) test.wasm
 	$(TINYGO) build             -o test.wasm -tags=hifive1b             examples/blinky1
 	@$(MD5SUM) test.wasm
 	$(TINYGO) build             -o test.wasm -tags=reelboard            examples/blinky1
diff --git a/src/runtime/runtime_tinygoriscv_qemu.go b/src/runtime/runtime_tinygoriscv_qemu.go
index d7527841..1155d553 100644
--- a/src/runtime/runtime_tinygoriscv_qemu.go
+++ b/src/runtime/runtime_tinygoriscv_qemu.go
@@ -1,4 +1,4 @@
-// +build tinygo.riscv,qemu
+// +build tinygo.riscv,virt,qemu
 
 package runtime