diff --git a/monitor/system.hpp b/monitor/system.hpp
index 3b4c309..6725b00 100644
--- a/monitor/system.hpp
+++ b/monitor/system.hpp
@@ -229,6 +229,11 @@
      * @param[in] jsonObj - JSON object to parse from
      */
     void setFaultConfig(const json& jsonObj);
+
+    /**
+     * @brief Log an error and shut down due to an offline fan controller
+     */
+    void handleOfflineFanController();
 };
 
 } // namespace phosphor::fan::monitor