diff --git a/smtcomp/results.py b/smtcomp/results.py
index c2a2e7c9..f3ae913b 100644
--- a/smtcomp/results.py
+++ b/smtcomp/results.py
@@ -535,10 +535,10 @@ def aws_result(res: str) -> int:
     )
 
     results = lf.with_columns(
-        (pl.col("logic") * 0).alias("participation"),
-        (pl.col("logic") * 0).alias("memory_B"),
-        (pl.col("logic") * 0).alias("nb_answers"),
-        (pl.col("logic") * 0).alias("cputime_s"),
+        participation = pl.lit(0,dtype=pl.Int64),
+        memory_B = pl.lit(0,dtype=pl.Int64),
+        nb_answers = pl.lit(0,dtype=pl.Int64),
+        cputime_s = pl.lit(0,dtype=pl.Int64),
     )
 
     return results