diff --git a/regressions/Makefile b/regressions/Makefile
index e1c5574..30639a9 100644
--- a/regressions/Makefile
+++ b/regressions/Makefile
@@ -58,6 +58,8 @@ all:
 	$(MAKE) -C ./ck_bag/validate all
 
 clean:
+	$(MAKE) -C ./ck_pflock/validate clean
+	$(MAKE) -C ./ck_pflock/benchmark clean
 	$(MAKE) -C ./ck_backoff/validate clean
 	$(MAKE) -C ./ck_bitmap/validate clean
 	$(MAKE) -C ./ck_queue/validate clean