--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 CFLAGS+=-std=c99 -g -Wall -Wextra -pedantic -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64
 LDFLAGS=-lm
-PREFIX=/usr/local
+PREFIX=/usr
 BINDIR=$(PREFIX)/bin
 MAN1DIR=$(PREFIX)/share/man/man1
 
