diff --git a/lib/compat/Makefile.inc b/lib/compat/Makefile.inc
index 99222aa1987e..206c4372d79f 100644
--- a/lib/compat/Makefile.inc
+++ b/lib/compat/Makefile.inc
@@ -7,6 +7,7 @@ beforeinstall: __remove-stale-libs
 __remove-stale-libs: .PHONY
 .for lib in ${LIBS}
 .if exists(${DESTDIR}${SHLIBDIR}/${lib})
+	-chflags noschg ${DESTDIR}${SHLIBDIR}/${lib}
 	rm -f ${DESTDIR}${SHLIBDIR}/${lib}
 .endif
 .endfor