diff --git a/stack/btm/btm_inq.cc b/stack/btm/btm_inq.cc
index 8bb416b..890cd3a 100644
--- a/stack/btm/btm_inq.cc
+++ b/stack/btm/btm_inq.cc
@@ -534,8 +534,10 @@
 
   if (controller_get_interface()->supports_ble()) {
     btm_ble_start_inquiry(p_inq->inqparms.duration);
+  } else {
+    LOG_WARN("Trying to do LE scan on a non-LE adapter");
+    p_inq->inqparms.mode &= ~BTM_BLE_INQUIRY_MASK;
   }
-  p_inq->inqparms.mode &= ~BTM_BLE_INQUIRY_MASK;
 
   btm_acl_update_inquiry_status(BTM_INQUIRY_STARTED);