diff --git a/CHANGELOG.md b/CHANGELOG.md
index 886a11b5e..58de533b1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Fixed
 - L2CAP: fix issue with outgoing connection before read remote supported complete when other channels exist
+- HFP: decline incoming RFCOMM connection after outgoing connection was started
 
 ## Changes September 2018
 
diff --git a/src/classic/hfp.c b/src/classic/hfp.c
index fa9e85c4d..6df55986a 100644
--- a/src/classic/hfp.c
+++ b/src/classic/hfp.c
@@ -712,7 +712,8 @@ void hfp_handle_rfcomm_event(uint8_t packet_type, uint16_t channel, uint8_t *pac
                 return;
             }
             if (hfp_connection->state != HFP_IDLE) {
-                log_error("hfp: incoming connection but state != HFP_IDLE");
+                log_error("hfp: incoming connection but not idle, reject");
+                rfcomm_decline_connection(rfcomm_event_incoming_connection_get_rfcomm_cid(packet));
                 return;
             }