--- a/Makefile
+++ b/Makefile
@@ -58,10 +58,7 @@ SHELL	:= /bin/bash
 
 all : build dmidump
 
-build: $(PY)-dmidecodemod.so
-$(PY)-dmidecodemod.so: $(SO)
-	cp $< $@
-$(SO):
+build:
 	$(PY) src/setup.py build
 
 dmidump : src/util.o src/efi.o src/dmilog.o