diff --git a/moto/redshift/models.py b/moto/redshift/models.py
index fd7c8b759..5da68fe67 100644
--- a/moto/redshift/models.py
+++ b/moto/redshift/models.py
@@ -237,10 +237,9 @@ class SnapshotCopyGrant(TaggableResourceMixin, BaseModel):
 
     resource_type = 'snapshotcopygrant'
 
-    def __init__(self, snapshot_copy_grant_name, kms_key_id, region_name):
+    def __init__(self, snapshot_copy_grant_name, kms_key_id):
         self.snapshot_copy_grant_name = snapshot_copy_grant_name
         self.kms_key_id = kms_key_id
-        self.region_name = region_name
 
     def to_json(self):
         return {
@@ -590,20 +589,16 @@ class RedshiftBackend(BaseBackend):
     def create_snapshot_copy_grant(self, **kwargs):
         snapshot_copy_grant_name = kwargs['snapshot_copy_grant_name']
         kms_key_id = kwargs['kms_key_id']
-        region_name = kwargs['region_name']
         if snapshot_copy_grant_name not in self.snapshot_copy_grants:
-            snapshot_copy_grant = SnapshotCopyGrant(snapshot_copy_grant_name,
-                                                    kms_key_id, region_name)
+            snapshot_copy_grant = SnapshotCopyGrant(snapshot_copy_grant_name, kms_key_id)
             self.snapshot_copy_grants[snapshot_copy_grant_name] = snapshot_copy_grant
             return snapshot_copy_grant
-
         raise SnapshotCopyGrantAlreadyExistsFaultError(snapshot_copy_grant_name)
 
     def delete_snapshot_copy_grant(self, **kwargs):
         snapshot_copy_grant_name = kwargs['snapshot_copy_grant_name']
         if snapshot_copy_grant_name in self.snapshot_copy_grants:
             return self.snapshot_copy_grants.pop(snapshot_copy_grant_name)
-
         raise SnapshotCopyGrantNotFoundFaultError(snapshot_copy_grant_name)
 
     def describe_snapshot_copy_grants(self, **kwargs):