diff --git a/osu.Desktop/LegacyIpc/LegacyTcpIpcProvider.cs b/osu.Desktop/LegacyIpc/LegacyTcpIpcProvider.cs
index b7f8baf219..8ac946d4a4 100644
--- a/osu.Desktop/LegacyIpc/LegacyTcpIpcProvider.cs
+++ b/osu.Desktop/LegacyIpc/LegacyTcpIpcProvider.cs
@@ -89,10 +89,10 @@ namespace osu.Desktop.LegacyIpc
                     {
                         return new LegacyIpcDifficultyCalculationResponse();
                     }
-            }
 
-            Console.WriteLine("Type not matched.");
-            return null;
+                default:
+                    throw new ArgumentException($"Unsupported message type {message}");
+            }
         }
 
         private static Ruleset getLegacyRulesetFromID(int rulesetId)