diff --git a/vpd-manager/bios_handler.cpp b/vpd-manager/bios_handler.cpp
index ff8ad37..4271665 100644
--- a/vpd-manager/bios_handler.cpp
+++ b/vpd-manager/bios_handler.cpp
@@ -187,7 +187,7 @@
         return;
     }
 
-    if (valInVPD.at(3) != fcoVal)
+    if (std::memcmp(vpdVal.data(), valInVPD.data(), 4) != 0)
     {
         std::cout << "Writing FCO to VPD: " << fcoVal << std::endl;
         manager.writeKeyword(sdbusplus::message::object_path{SYSTEM_OBJECT},