diff --git a/senju/main.py b/senju/main.py
index 8befcf0..d09d266 100644
--- a/senju/main.py
+++ b/senju/main.py
@@ -168,6 +168,9 @@ def scan_view():
 
 @app.route("/api/v1/image_reco", methods=['POST'])
 def image_recognition():
+    """
+    returns json formatted description of an image 
+    """
     # note that the classifier is a singleton
     if 'image' not in request.files:
         return "No image file provided", 400