diff --git a/ActivityStreams.md b/ActivityStreams.md
index 307eb36..ade877f 100644
--- a/ActivityStreams.md
+++ b/ActivityStreams.md
@@ -1,4 +1,4 @@
-Friendica is using ActivityStreams in version 1.0 for its activities and object types. Additional types are using for non standard activities.
+Friendica is using ActivityStreams in version 1.0 for its activities and object types. Additional types are used for non standard activities.
 
 See http://activitystrea.ms/head/activity-schema.html