diff --git a/src/PIL/__init__.py b/src/PIL/__init__.py
index b4cce27f4..544d71ce4 100644
--- a/src/PIL/__init__.py
+++ b/src/PIL/__init__.py
@@ -90,4 +90,5 @@ def __getattr__(name: str):
         from . import Image
 
         return Image.Image
-    raise AttributeError
+    msg = f"module 'PIL' has no attribute '{name}'"
+    raise AttributeError(msg)