diff --git a/tests/unit/Makefile b/tests/unit/Makefile
index 48635eb0d..13f7e6522 100644
--- a/tests/unit/Makefile
+++ b/tests/unit/Makefile
@@ -1,6 +1,6 @@
 GTESTFLAG := -lgtest -lgtest_main
 RPATH := -Wl,-rpath
-EXTRAFLAGS := -lyosys -pthreads
+EXTRAFLAGS := -lyosys -pthread
 
 OBJTEST := objtest
 BINTEST := bintest
diff --git a/tests/unit/kernel/rtlilTest.cc b/tests/unit/kernel/rtlilTest.cc
index 97cc936de..fae2f642a 100644
--- a/tests/unit/kernel/rtlilTest.cc
+++ b/tests/unit/kernel/rtlilTest.cc
@@ -385,7 +385,7 @@ namespace RTLIL {
 
 	TEST_P(WireRtlVsHdlIndexConversionTest, WireRtlVsHdlIndexConversion) {
 		std::unique_ptr<Module> mod = std::make_unique<Module>();
-		Wire *wire = mod->addWire(ID(test), 10);
+		Wire *wire = mod->addWire(NEW_ID, 10);
 
 		auto [upto, start_offset, width] = GetParam();