diff --git a/data_safe_haven/exceptions/__init__.py b/data_safe_haven/exceptions/__init__.py
index 7941e762c3..2a519ec604 100644
--- a/data_safe_haven/exceptions/__init__.py
+++ b/data_safe_haven/exceptions/__init__.py
@@ -48,7 +48,3 @@ class DataSafeHavenMicrosoftGraphError(DataSafeHavenAzureError):
 
 class DataSafeHavenPulumiError(DataSafeHavenCloudError):
     pass
-
-
-class DataSafeHavenActiveDirectoryError(DataSafeHavenCloudError):
-    pass