diff --git a/sw/lib/ocaml/papget_renderer.ml b/sw/lib/ocaml/papget_renderer.ml
index 3d93c43f14..6dfdf25411 100644
--- a/sw/lib/ocaml/papget_renderer.ml
+++ b/sw/lib/ocaml/papget_renderer.ml
@@ -80,7 +80,7 @@ class canvas_text = fun ?(config=[]) canvas_group x y ->
 	format <- text_editor#entry_format#text in
       ignore (text_editor#entry_format#connect#activate ~callback);
       let callback = fun () ->
-	size <- text_editor#spinbutton_size#value in
+        size <- text_editor#spinbutton_size#value in
       ignore (text_editor#spinbutton_size#connect#value_changed ~callback);
       let callback = fun () ->
         color <- text_editor#comboboxentry_color#entry#text in