diff --git a/lib/tasks/say.js b/lib/tasks/say.js
index 1c255686..5500a511 100644
--- a/lib/tasks/say.js
+++ b/lib/tasks/say.js
@@ -175,9 +175,9 @@ class TaskSay extends Task {
               const {filePath, servedFromCache, rtt} = await synthAudio(stats, {
                 account_sid: cs.accountSid,
                 text,
-                fallbackVendor,
-                fallbackLanguage,
-                fallbackVoice,
+                vendor: fallbackVendor,
+                language: fallbackLanguage,
+                voice: fallbackVoice,
                 engine,
                 model,
                 salt,