diff --git a/tableauserverclient/models/permissions_item.py b/tableauserverclient/models/permissions_item.py
index 14a97169c..61afa16ee 100644
--- a/tableauserverclient/models/permissions_item.py
+++ b/tableauserverclient/models/permissions_item.py
@@ -71,7 +71,7 @@ def __and__(self, other: "PermissionsRule") -> "PermissionsRule":
 
     def __or__(self, other: "PermissionsRule") -> "PermissionsRule":
         if self.grantee != other.grantee:
-            raise ValueError("Cannot AND two permissions rules with different grantees")
+            raise ValueError("Cannot OR two permissions rules with different grantees")
         capabilities = set((*self.capabilities.keys(), *other.capabilities.keys()))
         new_capabilities = {}
         for capability in capabilities: