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-rw-r--r--src/or/buffers.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/or/buffers.c b/src/or/buffers.c
index 33ea978daa..b54584fb4a 100644
--- a/src/or/buffers.c
+++ b/src/or/buffers.c
@@ -1056,7 +1056,7 @@ fetch_var_cell_from_buf(buf_t *buf, var_cell_t **out, int linkproto)
*out = NULL;
if (buf->datalen < header_len)
return 0;
- peek_from_buf(hdr, sizeof(hdr), buf);
+ peek_from_buf(hdr, header_len, buf);
command = get_uint8(hdr + circ_id_len);
if (!(cell_command_is_var_length(command, linkproto)))