diff --git a/share/mk/bsd.lib.mk b/share/mk/bsd.lib.mk
index 479f9321af96..e2ef70e7367d 100644
--- a/share/mk/bsd.lib.mk
+++ b/share/mk/bsd.lib.mk
@@ -1,5 +1,5 @@
 #	from: @(#)bsd.lib.mk	5.26 (Berkeley) 5/2/91
-#	$Id: bsd.lib.mk,v 1.47 1994/02/09 23:50:36 cgd Exp $
+#	$Id: bsd.lib.mk,v 1.48 1994/03/24 16:11:38 mycroft Exp $
 
 .if exists(${.CURDIR}/../Makefile.inc)
 .include "${.CURDIR}/../Makefile.inc"
@@ -117,7 +117,7 @@ llib-l${LIB}.ln: ${SRCS}
 
 .if !target(clean)
 clean:
-	rm -f a.out Errs errs mklog core ${CLEANFILES}
+	rm -f a.out [Ee]rrs mklog core *.core ${CLEANFILES}
 	rm -f ${OBJS}
 	rm -f ${POBJS} profiled/*.o
 	rm -f ${SOBJS} shared/*.o
diff --git a/share/mk/bsd.prog.mk b/share/mk/bsd.prog.mk
index ef5920dfd462..45653bf2c665 100644
--- a/share/mk/bsd.prog.mk
+++ b/share/mk/bsd.prog.mk
@@ -1,5 +1,5 @@
 #	from: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
-#	$Id: bsd.prog.mk,v 1.35 1994/02/09 23:50:38 cgd Exp $
+#	$Id: bsd.prog.mk,v 1.36 1994/03/24 16:11:40 mycroft Exp $
 
 .if exists(${.CURDIR}/../Makefile.inc)
 .include "${.CURDIR}/../Makefile.inc"
@@ -89,7 +89,7 @@ all: ${PROG}
 
 .if !target(clean)
 clean:
-	rm -f a.out [Ee]rrs mklog core ${PROG} ${OBJS} ${CLEANFILES}
+	rm -f a.out [Ee]rrs mklog core *.core ${PROG} ${OBJS} ${CLEANFILES}
 .endif
 
 cleandir: clean