diff --git a/CHANGELOG.md b/CHANGELOG.md
index 792cfcaf5..7d744c29e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Fixed
 - POSIX: fix RTS/CTS configuration by keeping local termios copy in btstack_uart_posix
+- HCI: fix handling of HCI Connection Complete with error (regression introduced in v1.5.1)
 - GAP: disable scanning, advertising, connection before updating random address
 - GAP: fix LE Scan with whitelist
 - HFP_AG: fix tracking for call dropped during outgoing ringing
diff --git a/src/hci.c b/src/hci.c
index c5555aa46..b705b91cb 100644
--- a/src/hci.c
+++ b/src/hci.c
@@ -2194,10 +2194,10 @@ static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size
 
 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){
     // CC2564C might emit Connection Complete for rejected incoming SCO connection
-    // To prevent accidentally free'ing the CHI connection for the ACL connection,
-    // check if the hci connection has been outgoing
+    // To prevent accidentally free'ing the HCI connection for the ACL connection,
+    // check if we have been aware of the HCI connection
     switch (conn->state){
-        case SEND_CREATE_CONNECTION:
+        case SENT_CREATE_CONNECTION:
         case RECEIVED_CONNECTION_REQUEST:
             break;
         default: