diff --git a/bigchaindb/models.py b/bigchaindb/models.py
index 5d4b6c9d..a46f2b73 100644
--- a/bigchaindb/models.py
+++ b/bigchaindb/models.py
@@ -113,13 +113,9 @@ class Transaction(Transaction):
 
         return self
 
-    @classmethod
-    def validate_structure(cls, tx_body):
-        validate_transaction_schema(tx_body)
-
     @classmethod
     def from_dict(cls, tx_body):
-        cls.validate_structure(tx_body)
+        validate_transaction_schema(tx_body)
         return super().from_dict(tx_body)
 
 
diff --git a/tests/common/test_transaction.py b/tests/common/test_transaction.py
index e24519c9..5b06f801 100644
--- a/tests/common/test_transaction.py
+++ b/tests/common/test_transaction.py
@@ -966,13 +966,9 @@ def test_validate_version(utx):
         validate_transaction_model(utx)
 
 
-def test_create_tx_no_asset_id(b):
+def test_create_tx_no_asset_id(b, utx):
     from bigchaindb.common.exceptions import SchemaValidationError
-    from bigchaindb.models import Transaction
-    tx = Transaction.create([b.me], [([b.me], 1)])
-    # works
-    Transaction.validate_structure(tx.to_dict())
-    # broken
-    tx.asset['id'] = 'b' * 64
+    from .utils import validate_transaction_model
+    utx.asset['id'] = 'b' * 64
     with raises(SchemaValidationError):
-        Transaction.validate_structure(tx.to_dict())
+        validate_transaction_model(utx)
diff --git a/tests/test_models.py b/tests/test_models.py
index 54d407f8..982ba2ba 100644
--- a/tests/test_models.py
+++ b/tests/test_models.py
@@ -1,21 +1,4 @@
 from pytest import raises
-from bigchaindb.common.exceptions import ValidationError
-
-
-class TestTransactionModel(object):
-    def test_validating_an_invalid_transaction(self, b):
-        from bigchaindb.models import Transaction
-
-        tx = Transaction.create([b.me], [([b.me], 1)])
-        tx.operation = 'something invalid'
-
-        with raises(ValidationError):
-            tx.validate(b)
-
-        tx.operation = 'CREATE'
-        tx.inputs = []
-        with raises(ValidationError):
-            tx.validate(b)
 
 
 class TestBlockModel(object):