diff --git a/mathics/eval/arithmetic.py b/mathics/eval/arithmetic.py
index 1a97f7991..55f5e9a4d 100644
--- a/mathics/eval/arithmetic.py
+++ b/mathics/eval/arithmetic.py
@@ -463,13 +463,6 @@ def append_last():
         elements_properties=ElementsProperties(False, False, True),
     )
 
-    elements.sort()
-    return Expression(
-        SymbolPlus,
-        *elements,
-        elements_properties=ElementsProperties(False, False, True),
-    )
-
 
 def eval_Power_number(base: Number, exp: Number) -> Optional[Number]:
     """