diff --git a/specification.md b/specification.md
index c346a52..6af9810 100644
--- a/specification.md
+++ b/specification.md
@@ -1649,7 +1649,7 @@ not actionable for the Server.
 Status: [Development]
 
 OpAMPConnectionSettingsRequest is a request for the Server to produce
-a OpAMPConnectionSettings in its response.
+an OpAMPConnectionSettings in its response.
 
 Used for [Agent-initiated CSR Flow](#agent-initiated-csr-flow).