diff --git a/include/openbmc_dbus_rest.hpp b/include/openbmc_dbus_rest.hpp
index 9233a27..8aab757 100644
--- a/include/openbmc_dbus_rest.hpp
+++ b/include/openbmc_dbus_rest.hpp
@@ -2232,7 +2232,7 @@
                 }
                 std::filesystem::directory_iterator files(loc);
 
-                for (auto& file : files)
+                for (const auto& file : files)
                 {
                     std::ifstream readFile(file.path());
                     if (!readFile.good())