diff --git a/pyswip/__init__.py b/pyswip/__init__.py
index db1a447..1c807ff 100644
--- a/pyswip/__init__.py
+++ b/pyswip/__init__.py
@@ -26,5 +26,5 @@
 # PySwip version
 __VERSION__ = "0.2.11"
 
-from pyswip.easy import *
 from pyswip.prolog import Prolog
+from pyswip.easy import *
diff --git a/tests/test_examples.py b/tests/test_examples.py
index 434f708..74fb6d1 100644
--- a/tests/test_examples.py
+++ b/tests/test_examples.py
@@ -285,7 +285,7 @@ def test_large_db(self):
         num_facts = 1250000
         prolog = Prolog()
         for i in range(num_facts):
-            prolog.assertz(f'p({i})')
+            prolog.assertz('p(%s)' % i)
 
         results = [r for r in prolog.query('p(I)')]
         self.assertEqual(len(results), num_facts)