diff --git a/include/PSUSensor.hpp b/include/PSUSensor.hpp
index 523d500..9e32138 100644
--- a/include/PSUSensor.hpp
+++ b/include/PSUSensor.hpp
@@ -38,7 +38,7 @@
     void checkThresholds(void) override;
     unsigned int sensorPollMs = defaultSensorPollMs;
 
-    int fd;
+    int fd{};
     static constexpr size_t warnAfterErrorCount = 10;
 
   public: