diff --git a/js/gpxedit.js b/js/gpxedit.js
index ad52dde..3ba4a03 100644
--- a/js/gpxedit.js
+++ b/js/gpxedit.js
@@ -829,7 +829,8 @@ function loadAction(file){
             !endsWith(file, '.kml') ||
             !endsWith(file, '.jpg') ||
             !endsWith(file, '.csv')){
-        OC.dialogs.alert(t('gpxedit', 'This file cannot be loaded'),t('gpxedit', 'Load error'));
+        OC.dialogs.alert(t('gpxedit', 'Impossible to load this file. ')+
+            t('gpxedit', 'Supported formats are gpx, kml, csv (unicsv) and jpg.'),t('gpxedit', 'Load error'));
         return;
     }
 
diff --git a/l10n/fr.js b/l10n/fr.js
index 0231d6f..be1938c 100644
--- a/l10n/fr.js
+++ b/l10n/fr.js
@@ -2,6 +2,9 @@ OC.L10N.register(
     "gpxedit",
     {
     "Where to save" : "Où enregistrer",
+    "Impossible to load this file. " : "Impossible de charger ce fichier. ",
+    "Supported formats are gpx, kml, csv (unicsv) and jpg." : "Les formats pris en charge sont gpx, kml, csv (unicsv) et jpg",
+    "Load error" : "Erreur de chargement",
     "Draw a track" : "Dessiner une trace",
     "Add a waypoint" : "Ajouter une étape",
     "Edit" : "Éditer",