diff --git a/src/server.rs b/src/server.rs
index f7b30a3..d26d070 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -739,6 +739,15 @@ async fn upload_file(
         filename = field.file_name().unwrap_or("upload.bin").to_string();
         let file_path = format!("{}/{}", user_dir, filename);
 
+        // Create user directory if not exists
+        if let Err(e) = tokio::fs::create_dir_all(&user_dir).await {
+            return (
+                StatusCode::INTERNAL_SERVER_ERROR,
+                Json(serde_json::json!({"error": format!("create_dir error: {}", e)})),
+            )
+                .into_response();
+        }
+
         let mut hasher = Sha256::new();
         let mut total_written: u64 = 0;