From b52933c0ef2ea0abf66e1147dc98424779bcdaca Mon Sep 17 00:00:00 2001
From: Simon Humpohl <simon.humpohl@rwth-aachen.de>
Date: Thu, 15 Mar 2018 18:00:45 +0100
Subject: [PATCH] Fix tests?

---
 qctoolkit/utils/sympy.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/qctoolkit/utils/sympy.py b/qctoolkit/utils/sympy.py
index 016ae82fc..b74e6b44f 100644
--- a/qctoolkit/utils/sympy.py
+++ b/qctoolkit/utils/sympy.py
@@ -159,9 +159,9 @@ def evaluate_compiled(expression: sympy.Expr,
                            '<string>', 'eval')
 
     if mode == 'numeric' or mode is None:
-        result = eval(compiled, parameters, _numpy_environment)
+        result = eval(compiled, parameters.copy(), _numpy_environment)
     elif mode == 'exact':
-        result = eval(compiled, parameters, _sympy_environment)
+        result = eval(compiled, parameters.copy(), _sympy_environment)
     else:
         raise ValueError("Unknown mode: '{}'".format(mode))