diff --git a/MagickCore/colorspace.c b/MagickCore/colorspace.c
index cb7ba26..65c152f 100644
--- a/MagickCore/colorspace.c
+++ b/MagickCore/colorspace.c
@@ -1175,9 +1175,9 @@
/*
Initialize YCbCr tables (ITU-R BT.601):
- Y = 0.298839*R+0.586811*G+0.114350*B
- Cb= -0.168736*R-0.331264*G+0.500000*B
- Cr= 0.500000*R-0.418688*G-0.081312*B
+ Y = 0.2988390*R+0.5868110*G+0.1143500*B
+ Cb= -0.1687367*R-0.3312640*G+0.5000000*B
+ Cr= 0.5000000*R-0.4186880*G-0.0813120*B
Cb and Cr, normally -0.5 through 0.5, are normalized to the range 0
through QuantumRange.
@@ -1193,7 +1193,7 @@
x_map[i].x=0.298839*(double) i;
y_map[i].x=0.586811*(double) i;
z_map[i].x=0.114350*(double) i;
- x_map[i].y=(-0.168730)*(double) i;
+ x_map[i].y=(-0.1687367)*(double) i;
y_map[i].y=(-0.331264)*(double) i;
z_map[i].y=0.500000*(double) i;
x_map[i].z=0.500000*(double) i;