diff --git a/psl-python/tests/resources/models/deeppsl/sign/tensorflow_model.py b/psl-python/tests/resources/models/deeppsl/sign/tensorflow_model.py
index 9b158d73b..d42c2fca1 100755
--- a/psl-python/tests/resources/models/deeppsl/sign/tensorflow_model.py
+++ b/psl-python/tests/resources/models/deeppsl/sign/tensorflow_model.py
@@ -82,7 +82,7 @@ def _prepare_data(self, data):
         if len(data) == 2:
             return data
 
-        return numpy.array([numpy.asarray(data[:, :-1]), numpy.asarray([[1, 0] if label == 0 else [0, 1] for label in data[:, -1]])])
+        return numpy.array([numpy.array(data[:, :-1]), numpy.array([[1, 0] if label == 0 else [0, 1] for label in data[:, -1]])])
 
 
 def calculate_metrics(y_pred, y_truth, metrics):