better cleaning
diff --git a/Makefile b/Makefile
index 7d36ab2..bb3a4e4 100644
--- a/Makefile
+++ b/Makefile
@@ -54,7 +54,7 @@
 	@$(MAKE) -C $(PRGDIR) $@ > $(VOID)
 	@$(MAKE) -C $(TESTDIR) $@ > $(VOID)
 	@$(MAKE) -C $(ZWRAPDIR) $@ > $(VOID)
-	@$(RM) zstd$(EXT)
+	@$(RM) zstd$(EXT) tmp*
 	@echo Cleaning completed