diff --git a/stix2/base.py b/stix2/base.py
index eb468ca..03d808e 100644
--- a/stix2/base.py
+++ b/stix2/base.py
@@ -382,7 +382,7 @@ class _Observable(_STIXBase):
                                     streamlined_object[key] = kwargs[key]
                         else:
                             if isinstance(kwargs[key], _STIXBase):
-                                    streamlined_object[key] = self._embed_obj_to_json(kwargs[key])
+                                streamlined_object[key] = self._embed_obj_to_json(kwargs[key])
                             else:
                                 streamlined_object[key] = kwargs[key]
 
diff --git a/stix2/test/v21/test_observed_data.py b/stix2/test/v21/test_observed_data.py
index 64c9859..90a494a 100644
--- a/stix2/test/v21/test_observed_data.py
+++ b/stix2/test/v21/test_observed_data.py
@@ -1396,15 +1396,15 @@ def test_objects_deprecation():
         )
 
 
-# def test_deterministic_id_same_extra_prop_vals():
-#     email_addr_1 = stix2.v21.EmailAddress(
-#         value="john@example.com",
-#         display_name="Johnny Doe"
-#     )
+def test_deterministic_id_same_extra_prop_vals():
+    email_addr_1 = stix2.v21.EmailAddress(
+        value="john@example.com",
+        display_name="Johnny Doe",
+    )
 
-#     email_addr_2 = stix2.v21.EmailAddress(
-#         value="john@example.com",
-#         display_name="Johnny Doe"
-#     )
+    email_addr_2 = stix2.v21.EmailAddress(
+        value="john@example.com",
+        display_name="Johnny Doe",
+    )
 
-#     assert email_addr_1.id == email_addr_2.id
+    assert email_addr_1.id == email_addr_2.id