diff --git a/src/zarr/storage/memory.py b/src/zarr/storage/memory.py
index 74d7758863..1f8dd75768 100644
--- a/src/zarr/storage/memory.py
+++ b/src/zarr/storage/memory.py
@@ -19,7 +19,7 @@
 
 class MemoryStore(Store):
     """
-    In-memory store for testing purposes.
+    In-memory store.
 
     Parameters
     ----------