diff --git a/src/nvidia-gpu/NvidiaSmaDevice.hpp b/src/nvidia-gpu/NvidiaSmaDevice.hpp
index fc78de2..2c74892 100644
--- a/src/nvidia-gpu/NvidiaSmaDevice.hpp
+++ b/src/nvidia-gpu/NvidiaSmaDevice.hpp
@@ -20,7 +20,7 @@
 #include <memory>
 #include <string>
 
-class SmaDevice
+class SmaDevice : public std::enable_shared_from_this<SmaDevice>
 {
   public:
     SmaDevice(const SensorConfigs& configs, const std::string& name,
@@ -35,6 +35,8 @@
         return path;
     }
 
+    void init();
+
   private:
     void makeSensors();