diff --git a/libgimpwidgets/gimpwidgets.def b/libgimpwidgets/gimpwidgets.def
index 54a27c5d53..2e3c3ce81c 100644
--- a/libgimpwidgets/gimpwidgets.def
+++ b/libgimpwidgets/gimpwidgets.def
@@ -376,7 +376,7 @@ EXPORTS
 	gimp_unit_store_set_pixel_values
 	gimp_unit_store_set_resolution
 	gimp_unit_store_set_resolutions
-        gimp_widgets_error_quark
+	gimp_widgets_error_quark
 	gimp_widgets_init
 	gimp_zoom_button_new
 	gimp_zoom_model_get_factor