1 files changed, 2 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index f5d1b2b..fad04c9 100644
--- a/Makefile
+++ b/Makefile
@@ -22,4 +22,5 @@ check: all
 	rm .coverage
 	
 clean:
-	rm -f .coverage *.py[co] btree/*.py[co]
+	rm -f .coverage *.py[co] btree/*.py[co] 
+	rm -rf build