diff --git a/openbsc/src/vty_interface_layer3.c b/openbsc/src/vty_interface_layer3.c
index 5e30982..fee5bae 100644
--- a/openbsc/src/vty_interface_layer3.c
+++ b/openbsc/src/vty_interface_layer3.c
@@ -58,7 +58,7 @@
 
 static struct buffer *argv_to_buffer(int argc, const char *argv[], int base)
 {
-	struct buffer *b = buffer_new(1024);
+	struct buffer *b = buffer_new(NULL, 1024);
 	int i;
 
 	if (!b)