diff --git a/fzn-parser/fznslurp.pl b/fzn-parser/fznslurp.pl
index ba2f8c3..24a7e5d 100644
--- a/fzn-parser/fznslurp.pl
+++ b/fzn-parser/fznslurp.pl
@@ -3,5 +3,7 @@
 load_ast(AST) :- load_ast(_>[], [], AST).
 
 load_ast(end_of_file, AST, AST).
-load_ast(IN > INT,    IN,  OUT) :- read(OP), load_ast(OP, INT, OUT).
+load_ast(IN > INT,    IN,  OUT) :- read(OP), !,
+				   write(OP), nl,
+				   load_ast(OP, INT, OUT).
 
--
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