diff --git a/contrib/fb303/py/Makefile.am b/contrib/fb303/py/Makefile.am
index 060495e..dc8c037 100644
--- a/contrib/fb303/py/Makefile.am
+++ b/contrib/fb303/py/Makefile.am
@@ -23,22 +23,22 @@
 all:
 
 all-local:
-	$(thrift_home)/bin/thrift --gen py $(top_srcdir)/if/fb303.thrift
-	mv gen-py/fb303/* fb303
-	$(PYTHON) setup.py build
+    $(thrift_home)/bin/thrift --gen py $(top_srcdir)/if/fb303.thrift
+    mv gen-py/fb303/* fb303
+    $(PYTHON) setup.py build
 
 # We're ignoring prefix here because site-packages seems to be
 # the equivalent of /usr/local/lib in Python land.
 # Old version (can't put inline because it's not portable).
 #$(PYTHON) setup.py install --prefix=$(prefix) --root=$(DESTDIR) $(PYTHON_SETUPUTIL_ARGS)
 install-exec-hook:
-	$(PYTHON) setup.py install --root=$(DESTDIR) --prefix=$(PY_PREFIX) $(PYTHON_SETUPUTIL_ARGS)
+    $(PYTHON) setup.py install --root=$(DESTDIR) --prefix=$(PY_PREFIX) $(PYTHON_SETUPUTIL_ARGS)
 
 
 
-clean:	clean-local
+clean:    clean-local
 
 clean-local:
-	$(RM) -r build
+    $(RM) -r build
 
 check-local: all