diff --git a/contrib/geoJSON_export.lua b/contrib/geoJSON_export.lua
index aff04b2..93ecd9f 100644
--- a/contrib/geoJSON_export.lua
+++ b/contrib/geoJSON_export.lua
@@ -293,7 +293,7 @@ local function create_geoJSON_file(storage, image_table, extra_data)
     file:write(geoJSON_file)
     file:close()
 
-    dt.print(string.format(_("%s file created in %s", "geoJSON", exportDirectory)))
+    dt.print(string.format(_("%s file created in %s"), "geoJSON", exportDirectory))
 
 -- Open the file with the standard programm
     if ( dt.preferences.read("geoJSON_export","OpengeoJSONFile","bool") == true ) then
diff --git a/contrib/hif_group_leader.lua b/contrib/hif_group_leader.lua
index 2252f96..9543bec 100644
--- a/contrib/hif_group_leader.lua
+++ b/contrib/hif_group_leader.lua
@@ -186,7 +186,7 @@ dt.register_event(MODULE .. "_collect", "shortcut",
     local images = dt.collection
     make_existing_hif_group_leader(images)
   end,
-  string.format(_("make hif group leader for %s", "collection"))
+  string.format(_("make hif group leader for %s", _("collection")))
 )
 
 dt.register_event(MODULE .. "_select", "shortcut",
@@ -194,7 +194,7 @@ dt.register_event(MODULE .. "_select", "shortcut",
     local images = dt.gui.selection()
     make_existing_hif_group_leader(images)
   end,
-  string.format(_("make hif group leader for %s", "selection"))
+  string.format(_("make hif group leader for %s", _("selection")))
 )
 
 return script_data
\ No newline at end of file
diff --git a/contrib/hugin.lua b/contrib/hugin.lua
index 1284916..4986842 100644
--- a/contrib/hugin.lua
+++ b/contrib/hugin.lua
@@ -83,7 +83,7 @@ end
 
 local function show_status(storage, image, format, filename,
   number, total, high_quality, extra_data)
-  dt.print(string.format(_("exporting to hugin: %d / $d", number, total)))
+  dt.print(string.format(_("exporting to hugin: %d / $d"), number, total))
 end
 
 local function create_panorama(storage, image_table, extra_data) --finalize
diff --git a/contrib/jpg_group_leader.lua b/contrib/jpg_group_leader.lua
index ef7cf91..7ca1359 100644
--- a/contrib/jpg_group_leader.lua
+++ b/contrib/jpg_group_leader.lua
@@ -186,7 +186,7 @@ dt.register_event(MODULE .. "_collect", "shortcut",
     local images = dt.collection
     make_existing_jpg_group_leader(images)
   end,
-  string.format(_("make jpg group leader for %s", "collection"))
+  string.format(_("make jpg group leader for %s", _("collection")))
 )
 
 dt.register_event(MODULE .. "_select", "shortcut",
@@ -194,7 +194,7 @@ dt.register_event(MODULE .. "_select", "shortcut",
     local images = dt.gui.selection()
     make_existing_jpg_group_leader(images)
   end,
-  string.format(_("make jpg group leader for %s", "selection"))
+  string.format(_("make jpg group leader for %s", _("selection")))
 )
 
 return script_data
\ No newline at end of file