diff --git a/include/Makefile b/include/Makefile
index 59856c1e765b..9f9a01a0c497 100644
--- a/include/Makefile
+++ b/include/Makefile
@@ -84,6 +84,7 @@ osreldate.h:	${.CURDIR}/../sys/conf/newvers.sh \
 	echo "#else" >> osreldate.h;				\
 	echo \#'undef __FreeBSD_version' >> osreldate.h;	\
 	echo \#'define __FreeBSD_version' $$RELDATE >> osreldate.h; \
+	echo "int getosreldate(void);" >> osreldate.h; \
 	echo "#endif" >> osreldate.h
 
 .for i in ${LHDRS}