diff --git a/lldb/packages/Python/lldbsuite/test/lang/objcxx/class-name-clash/Makefile b/lldb/packages/Python/lldbsuite/test/lang/objcxx/class-name-clash/Makefile
index 579600704dcd..57da077c8620 100644
--- a/lldb/packages/Python/lldbsuite/test/lang/objcxx/class-name-clash/Makefile
+++ b/lldb/packages/Python/lldbsuite/test/lang/objcxx/class-name-clash/Makefile
@@ -1,7 +1,11 @@
 LEVEL = ../../../make
 OBJCXX_SOURCES := main.mm myobject.mm
 include $(LEVEL)/Makefile.rules
+CFLAGS_NO_DEBUG =
+ifeq "$(OS)" "Darwin"
+		CFLAGS_NO_DEBUG += -arch $(ARCH)
+endif
 
 # myobject.o needs to be built without debug info
 myobject.o: myobject.mm
-	$(CXX) -c -o $@ $<
+	$(CXX) $(CFLAGS_NO_DEBUG) -c -o $@ $<