diff --git a/src/protobuf.py b/src/protobuf.py
index 507c7ad14..7096fb773 100644
--- a/src/protobuf.py
+++ b/src/protobuf.py
@@ -2,7 +2,7 @@
 Extremely minimal streaming codec for a subset of protobuf.  Supports uint32,
 bytes, string, embedded message and repeated fields.
 
-For de-sererializing (loading) protobuf types, object with `AsyncReader`
+For de-serializing (loading) protobuf types, object with `AsyncReader`
 interface is required:
 
 >>> class AsyncReader: