diff --git a/gdb/config/hp300bsd.mh b/gdb/config/hp300bsd.mh
index 099203f27fd..fd2fa4b6f8c 100644
--- a/gdb/config/hp300bsd.mh
+++ b/gdb/config/hp300bsd.mh
@@ -3,3 +3,5 @@ XDEPFILES=
 XM_FILE= xm-hp300bsd.h
 NAT_FILE= nm-hp300bsd.h
 NATDEPFILES= exec.o infptrace.o inftarg.o fork-child.o coredep.o corelow.o
+REGEX=regex.o
+REGEX1=regex.o