diff --git a/util/bench_stats.ml b/util/bench_stats.ml
index 632235e2..1bd96de5 100644
--- a/util/bench_stats.ml
+++ b/util/bench_stats.ml
@@ -148,10 +148,6 @@ let main () =
 try
     main ()
 with
-| Parselog.Unknown_status (f, l) ->
-        Format.printf "For file '%s' : unknown return string :@\n" f;
-        List.iter (fun s -> Format.printf "%s@." s) l;
-        exit 3
 | Commit_not_found ->
         Format.printf "No such commit found@.";
         exit 2
diff --git a/util/parselog.ml b/util/parselog.ml
index 03480e44..a8a33068 100644
--- a/util/parselog.ml
+++ b/util/parselog.ml
@@ -72,7 +72,10 @@ let status_of_lines f = function
     | ["Unsat"] -> Unsat
     | ["Time limit exceeded"; _] -> Timeout
     | ["Size limit exceeded"; _] -> Spaceout
-    | l -> raise (Unknown_status (f, l))
+    | l ->
+        Format.printf "For file '%s' : unknown return string :@\n" f;
+        List.iter (fun s -> Format.printf "%s@." s) l;
+        raise (Unknown_status (f, l))
 
 let parse_raw f =
     let f_in = open_in f in
@@ -94,6 +97,10 @@ let parse_raw f =
 let parse_commit root =
     let l = list_dir_files_rec (Filename.concat root "raw") in
     let res = Hashtbl.create (List.length l) in
-    List.iter (fun f -> try Hashtbl.add res f (parse_raw f) with Empty_raw _ -> ()) l;
+    List.iter (fun f ->
+        try
+            Hashtbl.add res f (parse_raw f)
+        with Empty_raw _ | Unknown_status _ -> ()
+    ) l;
     res
 
diff --git a/util/parselog.mli b/util/parselog.mli
index 50c70fbf..4e32211d 100644
--- a/util/parselog.mli
+++ b/util/parselog.mli
@@ -4,9 +4,6 @@ Copyright 2014 Guillaume Bury
 Copyright 2014 Simon Cruanes
 *)
 
-exception Empty_raw of string
-exception Unknown_status of string * string list
-
 val complete : string -> string -> string list
 val commit_info : string -> string
 val last_commit : unit -> string