diff --git a/t/Makefile b/t/Makefile
index bd09390d3..25c559bb4 100644
--- a/t/Makefile
+++ b/t/Makefile
@@ -27,6 +27,8 @@ pre-clean:
 
 clean:
 	$(RM) -r 'trash directory'.* test-results
+	$(RM) t????/cvsroot/CVSROOT/?*
+	$(RM) -r valgrind/bin
 
 aggregate-results-and-cleanup: $(T)
 	$(MAKE) aggregate-results