diff --git a/openbsc/src/vty/buffer.c b/openbsc/src/vty/buffer.c
index 195d062..0bc1760 100644
--- a/openbsc/src/vty/buffer.c
+++ b/openbsc/src/vty/buffer.c
@@ -65,11 +65,11 @@
 #define BUFFER_DATA_FREE(D) talloc_free((D))
 
 /* Make new buffer. */
-struct buffer *buffer_new(size_t size)
+struct buffer *buffer_new(void *ctx, size_t size)
 {
 	struct buffer *b;
 
-	b = talloc_zero(tall_vty_ctx, struct buffer);
+	b = talloc_zero(ctx, struct buffer);
 
 	if (size)
 		b->size = size;
@@ -138,7 +138,7 @@
 {
 	struct buffer_data *d;
 
-	d = _talloc_zero(tall_vty_ctx,
+	d = _talloc_zero(b,
 			 offsetof(struct buffer_data, data[b->size]),
 			 "buffer_add");
 	if (!d)
diff --git a/openbsc/src/vty/vty.c b/openbsc/src/vty/vty.c
index 8455b0e..5e49024 100644
--- a/openbsc/src/vty/vty.c
+++ b/openbsc/src/vty/vty.c
@@ -51,7 +51,7 @@
 	if (!new)
 		goto out;
 
-	new->obuf = buffer_new(0);	/* Use default buffer size. */
+	new->obuf = buffer_new(new, 0);	/* Use default buffer size. */
 	if (!new->obuf)
 		goto out_new;
 	new->buf = _talloc_zero(new, VTY_BUFSIZ, "vty_new->buf");