diff --git a/sensors/pluggable.hpp b/sensors/pluggable.hpp
index bd5bc1f..d139876 100644
--- a/sensors/pluggable.hpp
+++ b/sensors/pluggable.hpp
@@ -26,6 +26,7 @@
     void write(double value) override;
     void write(double value, bool force, int64_t* written) override;
     bool getFailed(void) override;
+    std::string getFailReason(void) override;
 
   private:
     std::unique_ptr<ReadInterface> _reader;