diff --git a/example/sdp_rfcomm_query.c b/example/sdp_rfcomm_query.c
index d58b262c5..17d346d4d 100644
--- a/example/sdp_rfcomm_query.c
+++ b/example/sdp_rfcomm_query.c
@@ -90,7 +90,7 @@ static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packe
             // BTstack activated, get started 
             if (btstack_event_state_get_state(packet) == HCI_STATE_WORKING){
                 handle_sdp_client_query_request.callback = &handle_start_sdp_client_query;
-                (void) sdp_client_register_query_callback(&handle_start_sdp_client_query);
+                (void) sdp_client_register_query_callback(&handle_sdp_client_query_request);
             }
             break;
         default:
diff --git a/example/spp_streamer_client.c b/example/spp_streamer_client.c
index 8ef6b83a6..c0d87f055 100644
--- a/example/spp_streamer_client.c
+++ b/example/spp_streamer_client.c
@@ -278,7 +278,7 @@ static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *pack
                             printf("Start to connect and query for SPP service\n");
                             state = W2_SEND_SDP_QUERY;
                             handle_sdp_client_query_request.callback = &handle_start_sdp_client_query;
-                            (void) sdp_client_register_query_callback(&handle_start_sdp_client_query);
+                            (void) sdp_client_register_query_callback(&handle_sdp_client_query_request);
                             break;
                         default:
                             break;