diff --git a/redfish-core/lib/account_service.hpp b/redfish-core/lib/account_service.hpp
index 9a45404..c89073b 100644
--- a/redfish-core/lib/account_service.hpp
+++ b/redfish-core/lib/account_service.hpp
@@ -1749,8 +1749,8 @@
             if (userCanSeeAllAccounts || (thisUser == user && userCanSeeSelf))
             {
                 nlohmann::json::object_t member;
-                member["@odata.id"] = "/redfish/v1/AccountService/Accounts/" +
-                                      user;
+                member["@odata.id"] = boost::urls::format(
+                    "/redfish/v1/AccountService/Accounts/{}", user);
                 memberArray.emplace_back(std::move(member));
             }
         }
@@ -2086,8 +2086,8 @@
 
                         nlohmann::json& roleEntry =
                             asyncResp->res.jsonValue["Links"]["Role"];
-                        roleEntry["@odata.id"] =
-                            "/redfish/v1/AccountService/Roles/" + role;
+                        roleEntry["@odata.id"] = boost::urls::format(
+                            "/redfish/v1/AccountService/Roles/{}", role);
                     }
                     else if (property.first == "UserPasswordExpired")
                     {
@@ -2126,8 +2126,8 @@
             }
         }
 
-        asyncResp->res.jsonValue["@odata.id"] =
-            "/redfish/v1/AccountService/Accounts/" + accountName;
+        asyncResp->res.jsonValue["@odata.id"] = boost::urls::format(
+            "/redfish/v1/AccountService/Accounts/{}", accountName);
         asyncResp->res.jsonValue["Id"] = accountName;
         asyncResp->res.jsonValue["UserName"] = accountName;
         });
diff --git a/redfish-core/lib/event_service.hpp b/redfish-core/lib/event_service.hpp
index 30103ba..2c2fd5d 100644
--- a/redfish-core/lib/event_service.hpp
+++ b/redfish-core/lib/event_service.hpp
@@ -644,8 +644,8 @@
         asyncResp->res.jsonValue["@odata.type"] =
             "#EventDestination.v1_8_0.EventDestination";
         asyncResp->res.jsonValue["Protocol"] = "Redfish";
-        asyncResp->res.jsonValue["@odata.id"] =
-            "/redfish/v1/EventService/Subscriptions/" + id;
+        asyncResp->res.jsonValue["@odata.id"] = boost::urls::format(
+            "/redfish/v1/EventService/Subscriptions/{}", id);
         asyncResp->res.jsonValue["Id"] = id;
         asyncResp->res.jsonValue["Name"] = "Event Destination " + id;
         asyncResp->res.jsonValue["Destination"] = subValue->destinationUrl;