diff --git a/include/ADCSensor.hpp b/include/ADCSensor.hpp
index 39b9aaa..dfd8713 100644
--- a/include/ADCSensor.hpp
+++ b/include/ADCSensor.hpp
@@ -69,7 +69,7 @@
     boost::asio::deadline_timer waitTimer;
     boost::asio::streambuf readBuf;
     std::string path;
-    int errCount;
+    size_t errCount;
     double scaleFactor;
     std::optional<BridgeGpio> bridgeGpio;
     PowerState readState;