diff --git a/CHANGES.rst b/CHANGES.rst
index d6b5305966..34320f9a7e 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -10,6 +10,7 @@ Enhancements
 * ``Table`` [*expr*, *n*] is supported.
 * ``ToString`` accepts an optional *form* parameter.
 * ``ToExpression`` handles multi-line string input
+* ``FileNames`` returns a sorted list (#1250).
 
 Bug fixes
 +++++++++
diff --git a/mathics/builtin/files.py b/mathics/builtin/files.py
index 2f7ed11b5f..9b8638c7db 100644
--- a/mathics/builtin/files.py
+++ b/mathics/builtin/files.py
@@ -4201,7 +4201,6 @@ def apply(self, filename, datelist, attribute, evaluation):
             if py_attr == "All":
                 os.utime(py_filename, (stattime, stattime))
         except OSError as e:
-            print(e)
             # evaluation.message(...)
             return SymbolFailed
 
@@ -5214,7 +5213,6 @@ def apply_3(self, forms, paths, n, evaluation, **options):
             elif n.get_head_name() == "System`DirectedInfinity":
                 n = None
             else:
-                print(n)
                 evaluation.message("FileNames", "badn", n)
                 return
         else:
@@ -5262,4 +5260,4 @@ def apply_3(self, forms, paths, n, evaluation, **options):
                                 filenames.add(osp.join(root, fn))
                                 break
 
-        return Expression("List", *[String(s) for s in filenames])
+        return Expression("List", *[String(s) for s in sorted(filenames)])