--- a/components/libusb/wrapper/Makefile	Tue Apr 17 10:38:01 2012 -0700
+++ b/components/libusb/wrapper/Makefile	Tue Apr 17 10:40:54 2012 -0700
@@ -49,6 +49,7 @@
 download:
 
 clobber:	clean
+	$(RM) $(SOURCE_DIR)/.prep
 
 prep:	$(SOURCE_DIR)/.prep
 
@@ -59,8 +60,6 @@
 # enumerates USB devices plugged into your system
 test:		$(TEST_32_and_64)
 
-CLEAN_PATHS +=	$(SOURCE_DIR)/.prep
-
 BUILD_PKG_DEPENDENCIES =	$(BUILD_TOOLS)
 
 include $(WS_TOP)/make-rules/depend.mk