diff --git a/Sources/Twilio/Models/Configuration.swift b/Sources/Twilio/Models/Configuration.swift
index baebcef..aaee485 100644
--- a/Sources/Twilio/Models/Configuration.swift
+++ b/Sources/Twilio/Models/Configuration.swift
@@ -22,7 +22,7 @@ public struct TwilioConfiguration {
             let accountId = Environment.get("TWILIO_ACCOUNT_ID"),
             let accountSecret = Environment.get("TWILIO_ACCOUNT_SECRET")
             else {
-            fatalError("Mailgun environmant variables not set")
+            fatalError("Twilio environmant variables not set")
         }
         return .init(accountId: accountId, accountSecret: accountSecret)
     }