diff --git a/README.md b/README.md
index 4ffc7d1..be4df3b 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,7 @@ The Operator returns a tuple `Tuple[('feature_vector', numpy.ndarray)]` containi
 - feature_vector:
   - the embedding of the image
   - data type: `numpy.ndarray`
+  - shape: (dim,)
 
 ## Requirements
 
diff --git a/pytorch/model.py b/pytorch/model.py
index 5a3a050..4a5fbc8 100644
--- a/pytorch/model.py
+++ b/pytorch/model.py
@@ -32,7 +32,7 @@ class Model():
         self._model.eval()
 
     def __call__(self, img_tensor: torch.Tensor):
-        return self._model(img_tensor).detach().numpy()
+        return self._model(img_tensor).flatten().detach().numpy()
 
     def train(self):
         """