diff --git a/lib/libfrr.c b/lib/libfrr.c
index 15de96feee..c60e26085f 100644
--- a/lib/libfrr.c
+++ b/lib/libfrr.c
@@ -61,7 +61,7 @@ static char pidfile_default[512];
 #ifdef HAVE_SQLITE3
 static char dbfile_default[512];
 #endif
-static char vtypath_default[256];
+static char vtypath_default[512];
 
 bool debug_memstats_at_exit = false;
 static bool nodetach_term, nodetach_daemon;
diff --git a/lib/northbound.c b/lib/northbound.c
index dbf90c58d4..8a5cd0ef14 100644
--- a/lib/northbound.c
+++ b/lib/northbound.c
@@ -777,7 +777,7 @@ static void nb_log_callback(const enum nb_event event,
 	zlog_debug(
 		"northbound callback: event [%s] op [%s] xpath [%s] value [%s]",
 		nb_event_name(event), nb_operation_name(operation), xpath,
-		value);
+		value ? value : "(NULL)");
 }
 
 /*