===================================================================
RCS file: /cvs/mandoc/dba.c,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -p -r1.5 -r1.6
--- mandoc/dba.c	2016/08/05 23:15:08	1.5
+++ mandoc/dba.c	2016/08/17 18:10:39	1.6
@@ -1,4 +1,4 @@
-/*	$Id: dba.c,v 1.5 2016/08/05 23:15:08 schwarze Exp $ */
+/*	$Id: dba.c,v 1.6 2016/08/17 18:10:39 schwarze Exp $ */
 /*
  * Copyright (c) 2016 Ingo Schwarze <schwarze@openbsd.org>
  *
@@ -177,7 +177,7 @@ dba_page_add(struct dba_array *page, int32_t ie, const
 	if (ie == DBP_ARCH) {
 		if (entries == NULL)
 			return;
-		if (str == NULL) {
+		if (str == NULL || *str == '\0') {
 			dba_array_free(entries);
 			dba_array_set(page, DBP_ARCH, NULL);
 			return;