diff --git a/Release_Notes_2.13.3.md b/Release_Notes_2.13.3.md
index 0c2a3e3..016b1e0 100644
--- a/Release_Notes_2.13.3.md
+++ b/Release_Notes_2.13.3.md
@@ -1,7 +1,7 @@
 Introduction
 ============
 
-AppArmor 2.13.3 is an maintenance release of the user space components
+AppArmor 2.13.3 is a maintenance release of the user space components
 of the AppArmor security project. The kernel portion of the project
 is maintained and pushed separately.