diff --git a/aidge_backend_cpu/unit_tests/test_recipes.py b/aidge_backend_cpu/unit_tests/test_recipes.py
index 5586ab246e61d04b5754421b90ef3cd30629c1c3..12d8774369af5a46cfbd30d44fc90f4f97ca9821 100644
--- a/aidge_backend_cpu/unit_tests/test_recipes.py
+++ b/aidge_backend_cpu/unit_tests/test_recipes.py
@@ -40,7 +40,7 @@ class test_recipes(unittest.TestCase):
         graph_view.set_backend("cpu")
 
         np_weights = np.arange(9).reshape([1, 1, 3, 3]).astype(np.float32)
-        np_bias = np.arange(1).reshape([1, 1]).astype(np.float32)
+        np_bias = np.arange(1).reshape([1]).astype(np.float32)
 
         np_scale = np.array([0.05]).astype(np.float32)
         np_shift = np.array([0.05]).astype(np.float32)