diff --git a/aes-32bit/Makefile b/aes-32bit/Makefile
index 719a0da..443f977 100644
--- a/aes-32bit/Makefile
+++ b/aes-32bit/Makefile
@@ -1,4 +1,4 @@
-CPPFLAGS = -g
+CPPFLAGS = -g -Ofast
 
 BUILD_DIR = bin