diff --git a/tests/test_injections.py b/tests/test_injections.py
index 2116fb94..b4d5ff3c 100644
--- a/tests/test_injections.py
+++ b/tests/test_injections.py
@@ -10,6 +10,8 @@ from objects.injections import inject
 
 from objects.providers import NewInstance
 
+from objects.providers import Error
+
 
 class InjectionTests(unittest.TestCase):
 
@@ -133,3 +135,7 @@ class InjectTests(unittest.TestCase):
         self.assertIsInstance(b1, list)
         self.assertIsInstance(b2, list)
         self.assertIsNot(b1, b2)
+
+    def test_decorate_with_not_injection(self):
+        """Test `inject()` decorator with not an injection instance."""
+        self.assertRaises(Error, inject, object)