diff --git a/redfish/computersystem.go b/redfish/computersystem.go
index c6b49d32..f4d7ac0a 100644
--- a/redfish/computersystem.go
+++ b/redfish/computersystem.go
@@ -830,7 +830,7 @@ type ComputerSystem struct {
 	OEM json.RawMessage `json:"Oem"`
 	// OperatingSystem shall contain a link to a resource of type OperatingSystem that contains operating system
 	// information for this system.
-	OperatingSystem string
+	operatingSystem string
 	// PCIeDevices shall be an array of references of type PCIeDevice.
 	pcieDevices []string
 	// PCIeDevicesCount is the number of PCIeDevices.
@@ -960,6 +960,7 @@ func (computersystem *ComputerSystem) UnmarshalJSON(b []byte) error {
 		Processors          common.Link
 		Redundancy          common.Link
 		Memory              common.Link
+		OperatingSystem     common.Link
 		SimpleStorage       common.Link
 		SecureBoot          common.Link
 		Storage             common.Link
@@ -994,6 +995,7 @@ func (computersystem *ComputerSystem) UnmarshalJSON(b []byte) error {
 	computersystem.memory = t.Memory.String()
 	computersystem.memoryDomains = t.MemoryDomains.String()
 	computersystem.networkInterfaces = t.NetworkInterfaces.String()
+	computersystem.operatingSystem = t.OperatingSystem.String()
 	computersystem.redundancy = t.Redundancy.String()
 	computersystem.secureBoot = t.SecureBoot.String()
 	computersystem.simpleStorage = t.SimpleStorage.String()
@@ -1114,6 +1116,11 @@ func (computersystem *ComputerSystem) NetworkInterfaces() ([]*NetworkInterface,
 	return ListReferencedNetworkInterfaces(computersystem.GetClient(), computersystem.networkInterfaces)
 }
 
+// OperatingSystem gets this system's operating system.
+func (computersystem *ComputerSystem) OperatingSystem() (*OperatingSystem, error) {
+	return GetOperatingSystem(computersystem.GetClient(), computersystem.operatingSystem)
+}
+
 // PCIeDevices gets all PCIeDevices for this system.
 func (computersystem *ComputerSystem) PCIeDevices() ([]*PCIeDevice, error) {
 	return common.GetObjects[PCIeDevice](computersystem.GetClient(), computersystem.pcieDevices)
diff --git a/redfish/computersystem_test.go b/redfish/computersystem_test.go
index c7372796..7ed034a8 100644
--- a/redfish/computersystem_test.go
+++ b/redfish/computersystem_test.go
@@ -125,6 +125,9 @@ var computerSystemBody = `{
 		"Storage": {
 			"@odata.id": "/redfish/v1/Systems/1/Storage"
 		},
+    	"OperatingSystem": {
+        	"@odata.id": "/redfish/v1/Systems/1/OperatingSystem"
+    	},
 		"LogServices": {
 			"@odata.id": "/redfish/v1/Systems/1/LogServices"
 		},
@@ -310,6 +313,10 @@ func TestComputerSystem(t *testing.T) { //nolint
 	if result.managedBy[0] != "/redfish/v1/Managers/BMC-1" {
 		t.Errorf("Received invalid Managers reference: %s", result.managedBy[0])
 	}
+
+	if result.operatingSystem != "/redfish/v1/Systems/1/OperatingSystem" {
+		t.Errorf("Received invalid OperatingSystem reference: %s", result.operatingSystem)
+	}
 }
 
 // TestComputerSystemUpdate tests the Update call.