diff --git a/Detector/DetCRD/compact/CRD_common_v01/materials.xml b/Detector/DetCRD/compact/CRD_common_v01/materials.xml
index c9f7edf444b55e0cc7e766b4c87892bb081b5d28..1636e38fac798925712717c082a54819c05eacb5 100644
--- a/Detector/DetCRD/compact/CRD_common_v01/materials.xml
+++ b/Detector/DetCRD/compact/CRD_common_v01/materials.xml
@@ -565,9 +565,9 @@
     <!-- Driftchamber: material for the drift chamber -->
    <material name="GasHe_90Isob_10">
      <D value="0.0003983999999999999" unit="g/cm3" />
-     <fraction n="0.3826351004462046" ref="He"/>
-     <fraction n="0.011371937371285891"   ref="H" />
-     <fraction n="0.6059929621825095" ref="C" />
+     <fraction n="0.3826373431212555" ref="He"/>
+     <fraction n="0.1070614182488552"   ref="H" />
+     <fraction n="0.5103012386298891" ref="C" />
    </material>
 
   </materials>
diff --git a/Detector/DetDriftChamber/compact/materials.xml b/Detector/DetDriftChamber/compact/materials.xml
index 44ee58bf7f60632ec8addf1cee047ed2f259cb5b..33a6ace58a76dca0f2703f2662163ab6a5496de4 100644
--- a/Detector/DetDriftChamber/compact/materials.xml
+++ b/Detector/DetDriftChamber/compact/materials.xml
@@ -151,9 +151,9 @@
   <!-- Driftchamber: material for the drift chamber -->
   <material name="GasHe_90Isob_10">
     <D value="0.0003983999999999999" unit="g/cm3" />
-    <fraction n="0.3826351004462046" ref="He"/>
-    <fraction n="0.011371937371285891"   ref="H" />
-    <fraction n="0.6059929621825095" ref="C" />
+    <fraction n="0.3826373431212555" ref="He"/>
+    <fraction n="0.1070614182488552"   ref="H" />
+    <fraction n="0.5103012386298891" ref="C" />
   </material>
 
 </materials>