diff --git a/docs/dev/plugins/PluginAPI.md b/docs/dev/plugins/PluginAPI.md
index 4764ca93b..6374d369b 100644
--- a/docs/dev/plugins/PluginAPI.md
+++ b/docs/dev/plugins/PluginAPI.md
@@ -33,7 +33,7 @@ the plugin developer.
 
 ## Threading
 
-Unless otherwise noted in the function's description, all functions all called from the same thread.
+Unless otherwise noted in the function's description, all functions are called from the same thread.
 
 
 ## Header files