diff --git a/src/vty/logging_vty.c b/src/vty/logging_vty.c
index a6d2f52..e17c7a8 100644
--- a/src/vty/logging_vty.c
+++ b/src/vty/logging_vty.c
@@ -315,7 +315,7 @@
 	if (*dptr)
 		talloc_free(*dptr);
 	*dptr = argv_concat(argv, argc, 0);
-	if (!dptr)
+	if (!*dptr)
 		return CMD_WARNING;
 
 	return CMD_SUCCESS;