@@ -60,6 +60,14 @@ func (s *systemRouter) getInfo(ctx context.Context, w http.ResponseWriter, r *ht

 		old.SecurityOptions = nameOnlySecurityOptions

 		return httputils.WriteJSON(w, http.StatusOK, old)

 	}

+	if versions.LessThan(httputils.VersionFromContext(ctx), "1.39") {

+		if info.KernelVersion == "" {

+			info.KernelVersion = "<unknown>"

+		}

+		if info.OperatingSystem == "" {

+			info.OperatingSystem = "<unknown>"

+		}

+	}

 	return httputils.WriteJSON(w, http.StatusOK, info)

 }

@@ -179,7 +179,7 @@ func hostName() string {

 }

 func kernelVersion() string {

-	kernelVersion := "<unknown>"

+	var kernelVersion string

 	if kv, err := kernel.GetKernelVersion(); err != nil {

 		logrus.Warnf("Could not get kernel version: %v", err)

 	} else {

@@ -198,7 +198,7 @@ func memInfo() *system.MemInfo {

 }

 func operatingSystem() string {

-	operatingSystem := "<unknown>"

+	var operatingSystem string

 	if s, err := operatingsystem.GetOperatingSystem(); err != nil {

 		logrus.Warnf("Could not get operating system name: %v", err)

 	} else {

@@ -13,6 +13,13 @@ keywords: "API, Docker, rcli, REST, documentation"

      will be rejected.

 -->

+## V1.39 API changes

+

+[Docker Engine API v1.39](https://docs.docker.com/engine/api/v1.39/) documentation

+

+* `GET /info` now returns an empty string, instead of `<unknown>` for `KernelVersion`

+  and `OperatingSystem` if the daemon was unable to obtain this information.

+

 ## V1.38 API changes

 [Docker Engine API v1.38](https://docs.docker.com/engine/api/v1.38/) documentation