diff --git a/app/widgets/gimphistogrameditor.c b/app/widgets/gimphistogrameditor.c
index 82b425a7f2..56a2dcdcdb 100644
--- a/app/widgets/gimphistogrameditor.c
+++ b/app/widgets/gimphistogrameditor.c
@@ -22,6 +22,7 @@
 
 #include "libgimpbase/gimpbase.h"
 #include "libgimpwidgets/gimpwidgets.h"
+#include "libgimpwidgets/gimpwidgets-private.h"
 
 #include "widgets-types.h"
 
@@ -223,6 +224,7 @@ gimp_histogram_editor_init (GimpHistogramEditor *editor)
     }
 
   editor->toggle = gtk_check_button_new_with_label (_("Compute unique colors:"));
+  gimp_widget_set_identifier (editor->toggle, "toggle-compute-unique-colors");
   gimp_label_set_attributes (GTK_LABEL (gtk_bin_get_child (GTK_BIN (editor->toggle))),
                              PANGO_ATTR_SCALE, PANGO_SCALE_SMALL,
                              -1);
diff --git a/modules/color-selector-cmyk.c b/modules/color-selector-cmyk.c
index b13a832aca..5deb8dd1d5 100644
--- a/modules/color-selector-cmyk.c
+++ b/modules/color-selector-cmyk.c
@@ -24,6 +24,7 @@
 #include "libgimpconfig/gimpconfig.h"
 #include "libgimpmodule/gimpmodule.h"
 #include "libgimpwidgets/gimpwidgets.h"
+#include "libgimpwidgets/gimpwidgets-private.h"
 
 #include "libgimp/libgimp-intl.h"
 
@@ -191,6 +192,7 @@ colorsel_cmyk_init (ColorselCmyk *module)
                              -1);
   gtk_grid_attach (GTK_GRID (grid), module->tic_label, 1, 4, 3, 1);
   gtk_widget_set_visible (module->tic_label, TRUE);
+  gimp_widget_set_identifier (module->tic_label, "total-ink-coverage");
 
   module->name_label = gtk_label_new (NULL);
   gtk_label_set_xalign (GTK_LABEL (module->name_label), 0.0);