diff --git a/etc/mail/Makefile b/etc/mail/Makefile
index e5ab41c13c02..8a5a7ff6266e 100644
--- a/etc/mail/Makefile
+++ b/etc/mail/Makefile
@@ -226,3 +226,6 @@ restart restart-mta restart-mspq:
 .if exists(Makefile.local)
 .include "Makefile.local"
 .endif
+
+# For the definition of $SHAREMODE
+.include <bsd.own.mk>