diff --git a/app/widgets/gimpcolorframe.c b/app/widgets/gimpcolorframe.c
index 5b2263b6c5..ec4d155aa6 100644
--- a/app/widgets/gimpcolorframe.c
+++ b/app/widgets/gimpcolorframe.c
@@ -613,10 +613,11 @@ gimp_color_frame_set_color (GimpColorFrame *frame,
   g_return_if_fail (GEGL_IS_COLOR (color));
 
   color = gegl_color_duplicate (color);
-  if (frame->sample_valid                     &&
-      frame->sample_average == sample_average &&
-      frame->x              == x              &&
-      frame->y              == y              &&
+  if (frame->sample_valid                                                   &&
+      frame->sample_average                == sample_average                &&
+      frame->x                             == x                             &&
+      frame->y                             == y                             &&
+      gegl_color_get_format (frame->color) == gegl_color_get_format (color) &&
       gimp_color_is_perceptually_identical (frame->color, color))
     {
       g_clear_object (&frame->color);