diff --git a/usr.bin/getconf/Makefile b/usr.bin/getconf/Makefile
index 53a7bac0d86..23122b37c99 100644
--- a/usr.bin/getconf/Makefile
+++ b/usr.bin/getconf/Makefile
@@ -3,6 +3,7 @@
 PROG=	getconf
 
 SRCS=	confstr.c getconf.c pathconf.c sysconf.c
+CFLAGS+= -I${.CURDIR}
 CLEANFILES+= confstr.c pathconf.c sysconf.c
 
 .SUFFIXES: .gperf