diff --git a/makefile b/makefile
index 288592c..8ff2887 100644
--- a/makefile
+++ b/makefile
@@ -1,8 +1,8 @@
 debug: test.cpp magyarsort.h
-	g++ test.cpp -g -o test.out
+	g++ test.cpp -g -std=c++14 -o test.out
 
 release: test.cpp magyarsort.h
-	g++ test.cpp -o test.out
+	g++ test.cpp -o -std=c++14 -O2 test.out
 
 clean: test.out
 	rm test.out