diff --git a/yoti_python_sdk/dynamic_sharing_service/policy/source_constraint_builder.py b/yoti_python_sdk/dynamic_sharing_service/policy/source_constraint_builder.py
index <HASH>..<HASH> 100644
--- a/yoti_python_sdk/dynamic_sharing_service/policy/source_constraint_builder.py
+++ b/yoti_python_sdk/dynamic_sharing_service/policy/source_constraint_builder.py
@@ -27,7 +27,7 @@ class SourceConstraintBuilder(object):
     def with_anchor(self, anchor):
         """
         :param anchor: Add an anchor to the source constraint.
-        It is recommended to use the other helper methods isntead of this one
+        It is recommended to use the other helper methods instead of this one
         """
         self.__anchors.append(anchor)
         return self
SDK-<I>: Fix typo in source_constraint_builder.py