diff --git a/lib/src/binding_mqtt/mqtt_extensions.dart b/lib/src/binding_mqtt/mqtt_extensions.dart
index 1b7f4b53..8be43d33 100644
--- a/lib/src/binding_mqtt/mqtt_extensions.dart
+++ b/lib/src/binding_mqtt/mqtt_extensions.dart
@@ -15,7 +15,6 @@ import '../definitions/security/auto_security_scheme.dart';
 import '../definitions/security/basic_security_scheme.dart';
 import '../definitions/validation/validation_exception.dart';
 import 'constants.dart';
-import 'mqtt_binding_exception.dart';
 
 /// [PrefixMapping] for expanding MQTT Vocabulary terms from compact IRIs.
 final mqttPrefixMapping = PrefixMapping(defaultPrefixValue: mqttContextUri);