diff --git a/app/src/main/kotlin/com/syncflow/data/providers/webdav/WebDavProvider.kt b/app/src/main/kotlin/com/syncflow/data/providers/webdav/WebDavProvider.kt
index 5d7012c..ff593ef 100644
--- a/app/src/main/kotlin/com/syncflow/data/providers/webdav/WebDavProvider.kt
+++ b/app/src/main/kotlin/com/syncflow/data/providers/webdav/WebDavProvider.kt
@@ -27,14 +27,7 @@ import java.util.concurrent.TimeUnit
 open class WebDavProvider(protected val account: CloudAccount) : CloudProvider {
 
     protected open val baseUrl: String
-        get() {
-            val raw = account.serverUrl?.trimEnd('/') ?: ""
-            // Silently upgrade http:// → https:// so that phone configs saved with
-            // http:// still work when the server only accepts HTTPS (e.g. behind Traefik
-            // with a global HTTP→HTTPS redirect). WebDAV methods (PROPFIND, MKCOL, MOVE)
-            // are not followed through redirects by OkHttp, so they would silently fail.
-            return if (raw.startsWith("http://")) "https://" + raw.removePrefix("http://") else raw
-        }
+        get() = account.serverUrl?.trimEnd('/') ?: ""
 
     protected val client: OkHttpClient by lazy {
         val creds = Json.parseToJsonElement(account.credentialJson).jsonObject
@@ -157,7 +150,12 @@ open class WebDavProvider(protected val account: CloudAccount) : CloudProvider {
         withContext(Dispatchers.IO) {
             val req = Request.Builder().url(url(remotePath)).method("MKCOL", null).build()
             client.newCall(req).execute().use { resp ->
-                if (!resp.isSuccessful && resp.code != 405) throw Exception("MKCOL HTTP ${resp.code}")
+                // 405 = directory already exists (most servers)
+                // 423 = Locked — SFTPGo returns this when the dir exists and has a lock;
+                //       treat as "already there", not a failure, so uploads inside it proceed.
+                if (!resp.isSuccessful && resp.code != 405 && resp.code != 423) {
+                    throw Exception("MKCOL HTTP ${resp.code}")
+                }
             }
         }
     }