diff --git a/src/plugins/metrics/metrics_base.ml b/src/plugins/metrics/metrics_base.ml
index c4c0934db605687aeb685d16abaebc37a0b4e5d6..baf2ca5fd2b43f6e3bb9a1f82b6e8621948e722e 100644
--- a/src/plugins/metrics/metrics_base.ml
+++ b/src/plugins/metrics/metrics_base.ml
@@ -256,11 +256,11 @@ let get_file_type filename =
       | "html" | "htm" -> Html
       | "txt" | "text" -> Text
       | s ->
-        Metrics_parameters.fatal
+        Metrics_parameters.abort
           "Unknown file extension %s. Cannot produce output.@." s
   with
     | No_suffix ->
-       Metrics_parameters.fatal
+       Metrics_parameters.abort
          "File %s has no suffix. Cannot produce output.@." filename
 
 module VarinfoByName = struct