diff --git a/lib/webauthn/relying_party.rb b/lib/webauthn/relying_party.rb
index 9d2b84d1..506e0b42 100644
--- a/lib/webauthn/relying_party.rb
+++ b/lib/webauthn/relying_party.rb
@@ -124,9 +124,9 @@ def verify_authentication(
     # DEPRECATED: This method will be removed in future.
     def origin
       warn(
-        "DEPRECATION WARNING: `WebAuthn.origin` is deprecated and will be removed in future. "\
-        "Please use `WebAuthn.allowed_origins` instead "\
-        "that also allows configuring multiple origins per Relying Party"
+        "DEPRECATION WARNING: `WebAuthn.origin` is deprecated and returns `nil` " \
+        "when `WebAuthn.allowed_origins` contains more than one origin. " \
+        "It will be removed in future. Please use `WebAuthn.allowed_origins` instead."
       )
 
       allowed_origins.first if allowed_origins&.size == 1
@@ -137,8 +137,8 @@ def origin=(new_origin)
       return if new_origin.nil?
 
       warn(
-        "DEPRECATION WARNING: `WebAuthn.origin` is deprecated and will be removed in future. "\
-        "Please use `WebAuthn.allowed_origins` instead "\
+        "DEPRECATION WARNING: `WebAuthn.origin=` is deprecated and will be removed in future. "\
+        "Please use `WebAuthn.allowed_origins=` instead "\
         "that also allows configuring multiple origins per Relying Party"
       )