diff --git a/src/pybricks/_common.py b/src/pybricks/_common.py
index ba19f07..d24cfe1 100644
--- a/src/pybricks/_common.py
+++ b/src/pybricks/_common.py
@@ -101,8 +101,8 @@ class System:
 
     def storage(self, offset, read=None, write=None):
         """
-        storage(self, offset, write=)
-        storage(self, offset, read=) -> bytes
+        storage(offset, write=)
+        storage(offset, read=) -> bytes
 
         Reads or writes binary data to persistent storage.