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-rw-r--r--prolog/problems/lists/memb_2/common.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/prolog/problems/lists/memb_2/common.py b/prolog/problems/lists/memb_2/common.py
index 119363a..b4a1cea 100644
--- a/prolog/problems/lists/memb_2/common.py
+++ b/prolog/problems/lists/memb_2/common.py
@@ -74,7 +74,7 @@ def hint(code, aux_code):
# missing/failed base case
- if not prolog.engine.ask_truthTO(engine_id, 'memb(qq, [qq,_,_,_])'):
+ if not prolog.engine.ask_truthTO(engine_id, 'memb(qq, [qq,a,b,c])'):
return [{'id': 'base_case'}]
# target predicate seems to always be false