1 files changed, 1 insertions, 1 deletions
diff --git a/eval.c b/eval.c
index cfe5854..cd9b95a 100644
--- a/eval.c
+++ b/eval.c
@@ -384,7 +384,7 @@ train(Datum *left, Datum *right)
 	result->func.type = FunctypeTrain;
 	result->func.left = nil;
 	if(left->func.type == FunctypeTrain)
-		result->func = left->func;
+		result->func = dupfunction(left->func);
 	else{
 		result->func.train.nfuncs = 1;
 		result->func.train.funcs = emalloc(sizeof(Function));