diff --git a/test/py.twisted/Makefile.am b/test/py.twisted/Makefile.am
index 414c5c4..4723b7d 100644
--- a/test/py.twisted/Makefile.am
+++ b/test/py.twisted/Makefile.am
@@ -20,11 +20,11 @@
 THRIFT = $(top_srcdir)/compiler/cpp/thrift
 
 stubs: ../ThriftTest.thrift ../SmallTest.thrift
-    $(THRIFT) --gen py:twisted ../ThriftTest.thrift
-    $(THRIFT) --gen py:twisted ../SmallTest.thrift
+	$(THRIFT) --gen py:twisted ../ThriftTest.thrift
+	$(THRIFT) --gen py:twisted ../SmallTest.thrift
 
 check: stubs
-    $(TRIAL) test_suite.py
+	$(TRIAL) test_suite.py
 
 clean-local:
-    $(RM) -r gen-py.twisted
+	$(RM) -r gen-py.twisted