diff --git a/Makefile b/Makefile
index 3502ae4..def13b0 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-FLAGS := -Wall -pedantic
+FLAGS := -Wall -O3 -pedantic
 LIBS :=
 
 ifeq ($(ARCH),win)