diff --git a/src/Common/src/Common/HeaderApiVersionReader.cs b/src/Common/src/Common/HeaderApiVersionReader.cs
index 2bffbf31..e5bea98c 100644
--- a/src/Common/src/Common/HeaderApiVersionReader.cs
+++ b/src/Common/src/Common/HeaderApiVersionReader.cs
@@ -15,6 +15,10 @@ public partial class HeaderApiVersionReader : IApiVersionReader
     /// <summary>
     /// Initializes a new instance of the <see cref="HeaderApiVersionReader"/> class.
     /// </summary>
+    /// <remarks>
+    /// There is no default header. Either initialize headers using the <see cref="HeaderNames"/> collection property,
+    /// or call a constructor that  accepts header names. Otherwise, this reader has no effect.
+    /// </remarks>
     public HeaderApiVersionReader() { }
 
     /// <summary>