diff --git a/fan_enclosure.hpp b/fan_enclosure.hpp
index 0b96bfc..5c6a040 100644
--- a/fan_enclosure.hpp
+++ b/fan_enclosure.hpp
@@ -32,6 +32,7 @@
             addInventory();
         }
 
+        void updInventory();
         void addSensor(
             std::unique_ptr<Sensor>&& sensor);