diff --git a/source/blender/editors/space_image/image_ops.c b/source/blender/editors/space_image/image_ops.c
index 335de6e173a..c87e547b6ea 100644
--- a/source/blender/editors/space_image/image_ops.c
+++ b/source/blender/editors/space_image/image_ops.c
@@ -2478,11 +2478,12 @@ static void image_sample_apply(bContext *C, wmOperator *op, const wmEvent *event
 				int point = RNA_enum_get(op->ptr, "point");
 
 				if (point == 1) {
-					curvemapping_set_black_white(curve_mapping, NULL, info->colfp);
+					curvemapping_set_black_white(curve_mapping, NULL, info->linearcol);
 				}
 				else if (point == 0) {
-					curvemapping_set_black_white(curve_mapping, info->colfp, NULL);
+					curvemapping_set_black_white(curve_mapping, info->linearcol, NULL);
 				}
+				WM_event_add_notifier(C, NC_WINDOW, NULL);
 			}
 		}