diff --git a/Makefile b/Makefile
index 88879a4..8ff797d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 CCPP    = g++
-CFLAGS  = -I. -Wall -Wextra -fanalyzer --std=c++17
+CFLAGS  = -I. -Wall -Wextra -fanalyzer -O3 --std=c++17
 CFLAGS2 = -Wno-unused-variable -Wno-unused-but-set-variable -Wno-unused-parameter
 
 SOURCES = $(shell find . -name '*.cpp')