diff --git a/stack/sdp/sdp_discovery.cc b/stack/sdp/sdp_discovery.cc
index 5667d43..b9b7bb1 100644
--- a/stack/sdp/sdp_discovery.cc
+++ b/stack/sdp/sdp_discovery.cc
@@ -715,6 +715,7 @@
   p = sdpu_get_len_from_type(p, p + p_ccb->list_len, type, &seq_len);
   if (p == NULL || (p + seq_len) > (p + p_ccb->list_len)) {
     SDP_TRACE_WARNING("%s: bad length", __func__);
+    sdp_disconnect(p_ccb, SDP_ILLEGAL_PARAMETER);
     return;
   }
   p_end = &p_ccb->rsp_list[p_ccb->list_len];