diff --git a/hshetl/transformers.py b/hshetl/transformers.py
index ca75a7de8900870a1bd90f66aeeac81651532e86..c7bd578d23e0e30b4cb667f6b93485dfda76dee4 100644
--- a/hshetl/transformers.py
+++ b/hshetl/transformers.py
@@ -89,8 +89,8 @@ class CompareTransformer(AbstractTransformer):
         :param target: The target container.
         :param mapping: If you do not want the result properties to be mapped like in target system, provide a mapping here.
         :param **kwargs: Accepts parameters from :class:`.AbstractTransformer`.
-        :type source: :class:`hshetl.entities.Container` or None
-        :type target: :class:`hshetl.entities.Container` or None
+        :type source: string or None
+        :type target: string or None
         :type mapping: dict or None
 
     YAML definition sample:
@@ -220,7 +220,7 @@ class PropertiesTransformer(AbstractTransformer):
         :param source: The source container.
         :param operations: The operations that will be performed. The key is the property that should be transformed and the value a method call.
         :param **kwargs: Accepts parameters from :class:`.AbstractTransformer`.
-        :type source: :class:`hshetl.entities.Container` or None
+        :type source: string or None
         :type operations: dict
 
     All property values of the entity are available in the local scope of your method call.