diff --git a/Svc/RateGroupDriver/RateGroupDriverComponentAi.xml b/Svc/RateGroupDriver/RateGroupDriverComponentAi.xml
index fde53b87c8..785fc53c2e 100644
--- a/Svc/RateGroupDriver/RateGroupDriverComponentAi.xml
+++ b/Svc/RateGroupDriver/RateGroupDriverComponentAi.xml
@@ -18,7 +18,7 @@ Generated by fpp-to-xml
       Cycle input to the rate group driver
       </comment>
     </port>
-    <port name="CycleOut" data_type="Svc::Cycle" kind="output" max_number="3">
+    <port name="CycleOut" data_type="Svc::Cycle" kind="output" max_number="$RateGroupDriverRateGroupPorts">
       <comment>
       Cycle output from the rate group driver
       </comment>
diff --git a/Svc/RateGroupDriver/xml.do b/Svc/RateGroupDriver/xml.do
index ceffc51020..e0d542f7b0 100644
--- a/Svc/RateGroupDriver/xml.do
+++ b/Svc/RateGroupDriver/xml.do
@@ -3,3 +3,11 @@
 . ./defs.sh
 
 xml_do "$@"
+# Put the AcConstants variable back in for now
+awk '
+/<port name="CycleOut"/ {
+  sub("max_number=\"[^\"]*\"", "max_number=\"$RateGroupDriverRateGroupPorts\"", $0)
+}
+{ print }
+' < $3/RateGroupDriverComponentAi.xml > $3/RateGroupDriverComponentAi.tmp.xml
+mv $3/RateGroupDriverComponentAi.tmp.xml $3/RateGroupDriverComponentAi.xml