diff --git a/monitor/main.cpp b/monitor/main.cpp
index e8b736b..52d5bdb 100644
--- a/monitor/main.cpp
+++ b/monitor/main.cpp
@@ -66,6 +66,10 @@
 #ifdef MONITOR_USE_JSON
     // Get JSON object from monitor JSON config file
     const auto& jsonObj = getJsonObj(bus);
+
+    // Retrieve and set trust groups within the trust manager
+    auto trust =
+        std::make_unique<phosphor::fan::trust::Manager>(getTrustGrps(jsonObj));
 #else
     auto trust = std::make_unique<phosphor::fan::trust::Manager>(trustGroups);