diff --git a/server/netwrapper.py b/server/netwrapper.py
index 4eca973..11aa462 100644
--- a/server/netwrapper.py
+++ b/server/netwrapper.py
@@ -140,3 +140,4 @@ class NetWrapper:
             return plaintext
         except Exception:
             print("Incorrect decryption")
+            return "ERROR".encode('UTF-8')
diff --git a/server/server.py b/server/server.py
index 812aab1..29717f1 100644
--- a/server/server.py
+++ b/server/server.py
@@ -40,6 +40,8 @@ class Server:
             self.networkInstance.sendMessage("LINOK".encode('UTF-8'))
         elif command == "LINERROR":
             self.networkInstance.sendMessage("LINERROR".encode('UTF-8'))
+        elif command == "ERROR":
+            return None
         parsedCommand = command.split(" ")
         if len(parsedCommand) > 3:
             self.networkInstance.sendMessage("ERROR".encode('UTF-8'))