Index: Makefile
==================================================================
--- Makefile
+++ Makefile
@@ -15,12 +15,12 @@
 .PHONY: check docs release
 
 utils tests new_tests: src
 
 check: tests new_tests
-	cd tests && ${MAKE} -s run
-	cd new_tests && ${MAKE} -s run
+	${MAKE} -C tests -s run
+	${MAKE} -C new_tests -s run
 
 docs:
 	rm -fr docs
 	doxygen >/dev/null