diff --git a/classification_service/mule.py b/classification_service/mule.py
index cd197d8..4655595 100644
--- a/classification_service/mule.py
+++ b/classification_service/mule.py
@@ -20,7 +20,7 @@ if SENTRY_DSN:
     )
 
 
-def run_classification(task):
+def run_classification(task, target_class_name: str):
     _, temp_model_name = tempfile.mkstemp()
     temp_means_name = temp_model_name + "MEANS"
 
@@ -51,6 +51,8 @@ def run_classification(task):
             classifier, mean, std, classes, mid_window, mid_step, short_window, short_step, compute_beat \
                 = load_model(temp_model_name)
 
+        target_id = classes.index(target_class_name)  # Might raise ValueError
+
         feature_vector = (numpy.array(task['features']) - mean) / std
         class_id, probability = classifier_wrapper(classifier, model_details['type'], feature_vector)
 
@@ -68,8 +70,8 @@ def run_classification(task):
     results = {
         "tag": task['tag'],
         "model": task['model'],
-        "class_id": class_id,
-        "probability": probability
+        "is_target": class_id == target_id,
+        "probability": probability[target_id]
     }
 
     return results
@@ -83,8 +85,9 @@ def main():
     while True:
         message = uwsgi.mule_get_msg()
         task = json.loads(message)
-        results = run_classification(task)
-        channel.basic_publish(exchange=os.environ['PIKA_EXCHANGE'], routing_key='classification-result', body=json.dumps(results).encode("utf-8"))
+        results = run_classification(task, os.environ['TARGET_CLASS_NAME'])
+        channel.basic_publish(exchange=os.environ['PIKA_EXCHANGE'], routing_key='classification-result',
+                              body=json.dumps(results).encode("utf-8"))
 
 
 if __name__ == '__main__':