diff --git a/docs/conf.py b/docs/conf.py
index 782ad97a..06007088 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -79,3 +79,11 @@
     ('index', 'gmpy2', 'gmpy2 Documentation',
      ['Case Van Horsen'], 3)
 ]
+
+# Python code that is treated like it were put in a testcleanup directive
+# for *every* file that is tested, and for every group.
+doctest_global_cleanup = """
+import gmpy2
+
+gmpy2.set_context(gmpy2.context())
+"""