diff --git a/RELEASE_NOTES.txt b/RELEASE_NOTES.txt
index 47c6304187..2466a48a26 100644
--- a/RELEASE_NOTES.txt
+++ b/RELEASE_NOTES.txt
@@ -2228,7 +2228,7 @@ Release 4.5
 -------------------
 
 HttpClient 4.5 (GA) is a minor feature release that includes several incremental enhancements
-to the exisitng functionality such as support for private domains in the Mozilla Public Suffix List.
+to the existing functionality such as support for private domains in the Mozilla Public Suffix List.
 
 Changelog:
 -------------------