--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@
LIBS=-lusb -lsgutils2
endif
-CFLAGS = -Wall -fPIC -I../include -g
+CFLAGS = -Wall -fPIC -I$(PREFIX)/include -I../include -g
# CFLAGS += -DDEBUG
ifndef DESTDIR
