diff --git a/docs/en/Distributed-Event-Bus.md b/docs/en/Distributed-Event-Bus.md
index 9664458aae..5504aeffd3 100644
--- a/docs/en/Distributed-Event-Bus.md
+++ b/docs/en/Distributed-Event-Bus.md
@@ -501,7 +501,7 @@ Configure<AbpDistributedEventBusOptions>(options =>
 
 ## Entity Synchronizer
 
-Todo: introdution.
+Todo: introduction.
 
 ### Create a Synchronizer Class