diff --git a/Flow.Launcher.Core/Plugin/JsonRPCPluginV2.cs b/Flow.Launcher.Core/Plugin/JsonRPCPluginV2.cs
index 305ba9b65..60130843e 100644
--- a/Flow.Launcher.Core/Plugin/JsonRPCPluginV2.cs
+++ b/Flow.Launcher.Core/Plugin/JsonRPCPluginV2.cs
@@ -91,7 +91,7 @@ namespace Flow.Launcher.Core.Plugin
 
         private void SetupJsonRPC()
         {
-            var formatter = new SystemTextJsonFormatter();
+            var formatter = new JsonMessageFormatter();
             var handler = new NewLineDelimitedMessageHandler(ClientPipe,
                 formatter);