diff --git a/oem/ibm/libpldmresponder/file_io.hpp b/oem/ibm/libpldmresponder/file_io.hpp
index 9e158dc..63cd51b 100644
--- a/oem/ibm/libpldmresponder/file_io.hpp
+++ b/oem/ibm/libpldmresponder/file_io.hpp
@@ -249,7 +249,7 @@
             std::string vspstring;
             std::string password;
 
-            for (auto& interface : interfaces)
+            for (const auto& interface : interfaces)
             {
                 if (interface.first == resDumpEntry)
                 {
@@ -288,7 +288,7 @@
             msg.read(path, interfaces);
             std::string csr;
 
-            for (auto& interface : interfaces)
+            for (const auto& interface : interfaces)
             {
                 if (interface.first == certAuthority)
                 {