diff --git a/redfish-core/lib/memory.hpp b/redfish-core/lib/memory.hpp
index 2d647dc..5d508c4 100644
--- a/redfish-core/lib/memory.hpp
+++ b/redfish-core/lib/memory.hpp
@@ -19,9 +19,9 @@
 
 #include <app.hpp>
 #include <boost/container/flat_map.hpp>
-#include <boost/format.hpp>
 #include <registries/privilege_registry.hpp>
 #include <utils/collection.hpp>
+#include <utils/hex_utils.hpp>
 #include <utils/json_utils.hpp>
 
 namespace redfish
@@ -154,7 +154,7 @@
         return;
     }
 
-    aResp->res.jsonValue[key] = (boost::format("0x%04x") % *value).str();
+    aResp->res.jsonValue[key] = "0x" + intToHexString(*value);
 }
 
 inline void getPersistentMemoryProperties(
diff --git a/redfish-core/lib/processor.hpp b/redfish-core/lib/processor.hpp
index d976264..59b7ff2 100644
--- a/redfish-core/lib/processor.hpp
+++ b/redfish-core/lib/processor.hpp
@@ -177,7 +177,7 @@
                 {
                     aResp->res
                         .jsonValue["ProcessorId"]["IdentificationRegisters"] =
-                        boost::lexical_cast<std::string>(*value);
+                        "0x" + intToHexString(*value);
                 }
             }
         }