===================================================================
RCS file: /cvs/docbook2mdoc/docbook2mdoc.c,v
retrieving revision 1.8
retrieving revision 1.9
diff -u -p -r1.8 -r1.9
--- docbook2mdoc/docbook2mdoc.c	2014/03/28 12:11:18	1.8
+++ docbook2mdoc/docbook2mdoc.c	2014/03/28 13:16:40	1.9
@@ -1,4 +1,4 @@
-/*	$Id: docbook2mdoc.c,v 1.8 2014/03/28 12:11:18 kristaps Exp $ */
+/*	$Id: docbook2mdoc.c,v 1.9 2014/03/28 13:16:40 kristaps Exp $ */
 /*
  * Copyright (c) 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -910,7 +910,10 @@ pnode_printprologue(struct parse *p, struct pnode *pn)
 {
 	struct pnode	*pp;
 
-	if (NULL != (pp = pnode_findfirst(p->root, NODE_REFMETA))) {
+	pp = NULL == p->root ? NULL :
+		pnode_findfirst(p->root, NODE_REFMETA);
+
+	if (NULL != pp) {
 		pnode_printrefmeta(p, pp);
 		pnode_unlink(pp);
 	} else {