diff --git a/geometry/materials.i b/geometry/materials.i
index a5fc9f0..4406316 100644
--- a/geometry/materials.i
+++ b/geometry/materials.i
@@ -120,7 +120,7 @@ mx18:h j 6012.70h j j j j j j j j
 mt18   poly.01t
 c
 c Cadmium density=8.65 g/cm3
-m19   48000.42c  1.0
+m19   48000.50c  1.0
 c 48106.80c 0.012450   48108.80c 0.008880   48110.80c 0.124700
 c      48111.80c 0.127950   48112.80c 0.241090   48113.80c 0.122270
 c      48114.80c 0.287540   48116.80c 0.075120