diff --git a/src/main/java/fr/titionfire/ffsaf/ws/FileSocket.java b/src/main/java/fr/titionfire/ffsaf/ws/FileSocket.java
index 96d61aa..283a09b 100644
--- a/src/main/java/fr/titionfire/ffsaf/ws/FileSocket.java
+++ b/src/main/java/fr/titionfire/ffsaf/ws/FileSocket.java
@@ -51,19 +51,13 @@ public class FileSocket {
                 fileRecv.fos = new FileOutputStream(fileRecv.file, false);
                 logger.info("Start reception of file: " + fileRecv.file.getAbsolutePath());
             } else {
-                // session.close(new CloseReason(CloseReason.CloseCodes.VIOLATED_POLICY, "File not found"));
+                session.close(new CloseReason(CloseReason.CloseCodes.VIOLATED_POLICY, "File not found"));
             }
         } catch (IOException e) {
             StringWriter errors = new StringWriter();
             e.printStackTrace(new PrintWriter(errors));
             logger.error(errors.toString());
         }
-
-        session.getAsyncRemote().sendText("ok", result ->  {
-            if (result.getException() != null) {
-                System.out.println("Unable to send message: " + result.getException());
-            }
-        });
     }
 
     @OnClose
@@ -137,7 +131,7 @@ public class FileSocket {
             if (check_sum != data[0]) {
                 fileRecv.session.getAsyncRemote().sendText("Error: Checksum error", result ->  {
                     if (result.getException() != null) {
-                        System.out.println("Unable to send message: " + result.getException());
+                        logger.error("Unable to send message: " + result.getException());
                     }
                 });
                 return;
@@ -151,15 +145,9 @@ public class FileSocket {
                 logger.error(errors.toString());
             }
 
-            try {
-                Thread.sleep(1);
-            } catch (InterruptedException e) {
-                throw new RuntimeException(e);
-            }
-
             fileRecv.session.getAsyncRemote().sendText("ok", result ->  {
                 if (result.getException() != null) {
-                    System.out.println("Unable to send message: " + result.getException());
+                    logger.error("Unable to send message: " + result.getException());
                 }
             });
         }