diff --git a/jsonrpcserver/result.py b/jsonrpcserver/result.py
index 7616fd3..889b24e 100644
--- a/jsonrpcserver/result.py
+++ b/jsonrpcserver/result.py
@@ -31,7 +31,7 @@ def __repr__(self) -> str:
 
 
 # Union of the two valid result types
-Result = Either[SuccessResult, ErrorResult]
+Result = Either[ErrorResult, SuccessResult]
 
 
 # Helpers