diff --git a/Geometry/TrackerCommonData/data/PhaseI/pixfwd.xml b/Geometry/TrackerCommonData/data/PhaseI/pixfwd.xml
index a10cc39f71497..c9d2894ad7c4b 100644
--- a/Geometry/TrackerCommonData/data/PhaseI/pixfwd.xml
+++ b/Geometry/TrackerCommonData/data/PhaseI/pixfwd.xml
@@ -20,7 +20,7 @@
 
  <Constant name="ZCylinder"      value="[AnchorZ]"/>
 
- <Constant name="FlexCableDiskRmin" value="117.35*mm"/>
+ <Constant name="FlexCableDiskRmin" value="[pixfwdSupportRingParameters:InnerDiskOuterRingCFRMax]"/>
  <Constant name="FlexCableDiskRmax" value="167.9*mm"/>
  <Constant name="FlexCableDiskHalfThickness" value="0.15*mm"/>
 
diff --git a/Geometry/TrackerCommonData/data/PhaseI/pixfwdMaterials.xml b/Geometry/TrackerCommonData/data/PhaseI/pixfwdMaterials.xml
index fe9f4a644c91e..43e65ce0b0527 100644
--- a/Geometry/TrackerCommonData/data/PhaseI/pixfwdMaterials.xml
+++ b/Geometry/TrackerCommonData/data/PhaseI/pixfwdMaterials.xml
@@ -324,7 +324,7 @@
     </MaterialFraction>
   </CompositeMaterial>
 
-  <CompositeMaterial name="Pix_Fwd_AluFlexCable2" density="0.16*g/cm3" symbol=" " method="mixture by weight">
+  <CompositeMaterial name="Pix_Fwd_AluFlexCable2" density="0.16132*g/cm3" symbol=" " method="mixture by weight">
     <MaterialFraction fraction="0.3985">
       <rMaterial name="materials:Aluminium"/>
     </MaterialFraction>