diff --git a/src/windows/serialInterface.cxx b/src/windows/serialInterface.cxx
index feaa2f7..8a2258f 100644
--- a/src/windows/serialInterface.cxx
+++ b/src/windows/serialInterface.cxx
@@ -94,6 +94,7 @@ struct hklmRegistryKey_t
 			displayError(result, "retrieve value for key"sv, keyName);
 			return {};
 		}
+		value.resize(value.length() - 1U);
 		return value;
 	}
 };