diff --git a/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/auth/RustMatrixAuthenticationService.kt b/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/auth/RustMatrixAuthenticationService.kt
index 336aa4d054..40f4b90072 100644
--- a/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/auth/RustMatrixAuthenticationService.kt
+++ b/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/auth/RustMatrixAuthenticationService.kt
@@ -434,8 +434,9 @@ class RustMatrixAuthenticationService(
         qrCodeData: QrCodeData,
     ): Client {
         Timber.d("Creating client for QR Code login with simplified sliding sync")
-        // The 2025 version of MSC4108 will always give us the baseUrl and guarantees it to be a well-formed URL
-        // The 2024 version always has null baseUrl and uses the serverName instead, which can be null or malformed
+        // The 2025 version of MSC4108 provides baseUrl; the 2024 version has null baseUrl and uses
+        // serverName instead, which can be null or malformed. We only enforce presence/non-blankness
+        // here and rely on serverNameOrHomeserverUrl()/the Rust builder layer to validate structure.
         val baseUrlOrServerName = qrCodeData.baseUrl() ?: qrCodeData.serverName()
 
         if (baseUrlOrServerName == null) {