diff --git a/pygls/exceptions.py b/pygls/exceptions.py
index 639ea669..33fe2946 100644
--- a/pygls/exceptions.py
+++ b/pygls/exceptions.py
@@ -67,7 +67,7 @@ def to_dict(self):
 
 
 class JsonRpcInternalError(JsonRpcException):
-    CODE = -32602
+    CODE = -32603
     MESSAGE = "Internal Error"
 
     @classmethod