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-rw-r--r--mistrust_tit4tat.pl2
1 files changed, 1 insertions, 1 deletions
diff --git a/mistrust_tit4tat.pl b/mistrust_tit4tat.pl
index ebea1cb..5b95b9e 100644
--- a/mistrust_tit4tat.pl
+++ b/mistrust_tit4tat.pl
@@ -3,4 +3,4 @@
% Use opponents last decision
mistrust_tit4tat([Last|_],Last).
% Fallback to defect if history is empty.
-mistrust_tit4tat([],d).
+mistrust_tit4tat([],d,_,_).