diff --git a/include/HwmonTempSensor.hpp b/include/HwmonTempSensor.hpp
index d5c1051..677cab8 100644
--- a/include/HwmonTempSensor.hpp
+++ b/include/HwmonTempSensor.hpp
@@ -24,7 +24,7 @@
     boost::asio::deadline_timer waitTimer;
     boost::asio::streambuf readBuf;
     std::string path;
-    int errCount;
+    size_t errCount;
     void setupRead(void);
     void handleResponse(const boost::system::error_code& err);
     void checkThresholds(void) override;