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-rw-r--r--prolog/problems/lists/conc_3/common.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/prolog/problems/lists/conc_3/common.py b/prolog/problems/lists/conc_3/common.py
index fd97865..105f801 100644
--- a/prolog/problems/lists/conc_3/common.py
+++ b/prolog/problems/lists/conc_3/common.py
@@ -88,7 +88,7 @@ def hint(code, aux_code):
# inserting first list's head into the second list in recursive call: conc(T, [H\L2], L)
if prolog.engine.ask_truthTO(engine_id,
- 'conc([a,b,c,d,e], [1,2,3,4], L = [e,d,c,b,a,1,2,3,4])'):
+ 'conc([a,b,c,d,e], [1,2,3,4], [e,d,c,b,a,1,2,3,4])'):
return [{'id': 'insertion_into_second_list'}]
# forcing result onto recursion; case of conc(T, L2, [H|L])