diff --git a/monitor/gen-fan-monitor-defs.py b/monitor/gen-fan-monitor-defs.py
index 965625b..7a1b874 100755
--- a/monitor/gen-fan-monitor-defs.py
+++ b/monitor/gen-fan-monitor-defs.py
@@ -57,12 +57,15 @@
 ##If a group were to ever need a different constructor,
 ##it could be handled here.
 <%def name="get_lambda_contents(group)">
-            std::vector<std::string> names{
-            %for sensor in group['sensors']:
-                "${sensor['name']}",
+            std::vector<GroupDefinition> group{
+            %for member in group['group']:
+            <%
+                in_trust = str(member.get('in_trust', "true")).lower()
+            %>
+                GroupDefinition{"${member['name']}", ${in_trust}},
             %endfor
             };
-            return std::make_unique<${group['class']}>(names);
+            return std::make_unique<${group['class']}>(group);
 </%def>
 const std::vector<CreateGroupFunction> trustGroups
 {