diff --git a/ormar/fields/sqlalchemy_encrypted.py b/ormar/fields/sqlalchemy_encrypted.py
index 3b5b18c..10a017b 100644
--- a/ormar/fields/sqlalchemy_encrypted.py
+++ b/ormar/fields/sqlalchemy_encrypted.py
@@ -12,6 +12,7 @@ from sqlalchemy.types import TypeDecorator
 
 from ormar import ModelDefinitionError
 
+cryptography = None
 try:
     import cryptography
     from cryptography.fernet import Fernet