diff --git a/Tools/Sources/BuildSDK.swift b/Tools/Sources/BuildSDK.swift
index 211a34efe..c316a900f 100644
--- a/Tools/Sources/BuildSDK.swift
+++ b/Tools/Sources/BuildSDK.swift
@@ -25,7 +25,7 @@ struct BuildSDK: ParsableCommand {
     var target: Target?
     
     @Option(help: "The profile to use when building the SDK. Omit this option to build in debug mode.")
-    var profile: Profile = .debug
+    var profile: Profile = .reldbg
 
     enum Error: LocalizedError {
         case rustupOutputFailure