diff --git a/specification/botservice/resource-manager/Microsoft.BotService/preview/2023-09-15-preview/botservice.json b/specification/botservice/resource-manager/Microsoft.BotService/preview/2023-09-15-preview/botservice.json
index 85d4ff731c3d..fce9212914b8 100644
--- a/specification/botservice/resource-manager/Microsoft.BotService/preview/2023-09-15-preview/botservice.json
+++ b/specification/botservice/resource-manager/Microsoft.BotService/preview/2023-09-15-preview/botservice.json
@@ -2412,7 +2412,7 @@
         "deploymentEnvironment": {
           "type": "string",
           "description": "Deployment environment for Microsoft Teams channel calls",
-          "default": "FallbackDeploymentEnvironment"
+          "default": "CommercialDeployment"
         },
         "acceptedTerms": {
           "type": "boolean",