diff --git a/test/test_api/test_api.py b/test/test_api/test_api.py
index 0f8e510f..bfe305b6 100644
--- a/test/test_api/test_api.py
+++ b/test/test_api/test_api.py
@@ -104,7 +104,7 @@ def test_completion_on_hex_literals(Script):
     _check_number(Script, '0xE7.', 'int')
     _check_number(Script, '0xEa.', 'int')
     # theoretically, but people can just check for syntax errors:
-    #assert Script('0x.').completions() == []
+    assert Script('0x.').completions() == []
 
 
 def test_completion_on_complex_literals(Script):