diff --git a/app/core/gimpcurve-map.c b/app/core/gimpcurve-map.c
index 740fc8b01d..aaea7ae66e 100644
--- a/app/core/gimpcurve-map.c
+++ b/app/core/gimpcurve-map.c
@@ -154,7 +154,7 @@ gimp_curve_map_pixels (GimpCurve *curve_colors,
         {
           dest[0] = src[0];
           dest[1] = src[1];
-          dest[2] = gimp_curve_map_value (curve_green, src[2]);
+          dest[2] = gimp_curve_map_value (curve_blue, src[2]);
           dest[3] = src[3];
 
           src  += 4;