diff --git a/compact/tracking/definitions.xml b/compact/tracking/definitions.xml
index 15578dcdbf..9975cc3bc8 100644
--- a/compact/tracking/definitions.xml
+++ b/compact/tracking/definitions.xml
@@ -174,9 +174,12 @@
   <plugins>
     <plugin name="epic_FileLoader">
       <arg value="cache:$DETECTOR_PATH:/opt/detector"/>
-      <arg value="file:calibrations/materials-map.cbor"/>
+      <arg value="file:calibrations/materials-map-brycecanyon.cbor"/>
       <arg value="url:https://eicweb.phy.anl.gov/EIC/detectors/athena/uploads/77bd16bef5d811f31256279a3601c9d5/material-maps.cbor"/>
     </plugin>
   </plugins>
+  <define>
+    <constant name="materials-map" value="calibrations/materials-map-brycecanyon.cbor" type="string"/>
+  </define>
 
 </lccdd>
diff --git a/compact/tracking/definitions_arches.xml b/compact/tracking/definitions_arches.xml
index 5feea6784a..79482411bb 100644
--- a/compact/tracking/definitions_arches.xml
+++ b/compact/tracking/definitions_arches.xml
@@ -180,9 +180,12 @@
   <plugins>
     <plugin name="epic_FileLoader">
       <arg value="cache:$DETECTOR_PATH:/opt/detector"/>
-      <arg value="file:calibrations/materials-map.cbor"/>
+      <arg value="file:calibrations/materials-map-arches.cbor"/>
       <arg value="url:https://eicweb.phy.anl.gov/EIC/detectors/athena/uploads/77bd16bef5d811f31256279a3601c9d5/material-maps.cbor"/>
     </plugin>
   </plugins>
+  <define>
+    <constant name="materials-map" value="calibrations/materials-map-arches.cbor" type="string"/>
+  </define>
 
 </lccdd>
diff --git a/compact/tracking/definitions_craterlake.xml b/compact/tracking/definitions_craterlake.xml
index 52af07fe3f..79b15c4def 100644
--- a/compact/tracking/definitions_craterlake.xml
+++ b/compact/tracking/definitions_craterlake.xml
@@ -195,9 +195,12 @@
   <plugins>
     <plugin name="epic_FileLoader">
       <arg value="cache:$DETECTOR_PATH:/opt/detector"/>
-      <arg value="file:calibrations/materials-map.cbor"/>
+      <arg value="file:calibrations/materials-map-craterlake.cbor"/>
       <arg value="url:https://eicweb.phy.anl.gov/EIC/detectors/athena/uploads/6253bfcb92dd6bc236dd9a06084614ba/material-maps.cbor"/>
     </plugin>
   </plugins>
+  <define>
+    <constant name="materials-map" value="calibrations/materials-map-craterlake.cbor" type="string"/>
+  </define>
 
 </lccdd>