diff --git a/tstl/Makefile b/tstl/Makefile
index 21a299a1..d9eb02e2 100644
--- a/tstl/Makefile
+++ b/tstl/Makefile
@@ -10,3 +10,6 @@ debug/bin/tester: $(TESTSUITE_CPP_FILES)
 
 test: debug/bin/tester
 	./debug/bin/tester
+
+clean:
+	rm -rf debug