diff --git a/src/api/python/z3.py b/src/api/python/z3.py
index f68457383..aaad24256 100644
--- a/src/api/python/z3.py
+++ b/src/api/python/z3.py
@@ -6449,7 +6449,7 @@ class Tactic:
 
 def _to_goal(a):
     if isinstance(a, BoolRef):
-        goal = Goal(a.ctx)
+        goal = Goal(ctx = a.ctx)
         goal.add(a)
         return goal
     else: