diff --git a/cmd/oci-runtime-tool/main.go b/cmd/oci-runtime-tool/main.go
index a164ad034..600d540da 100644
--- a/cmd/oci-runtime-tool/main.go
+++ b/cmd/oci-runtime-tool/main.go
@@ -22,11 +22,6 @@ func main() {
 			Value: "error",
 			Usage: "Log level (panic, fatal, error, warn, info, or debug)",
 		},
-		cli.StringFlag{
-			Name:  "platform",
-			Value: "linux",
-			Usage: "Platform the tool targets",
-		},
 	}
 
 	app.Commands = []cli.Command{
diff --git a/cmd/oci-runtime-tool/validate.go b/cmd/oci-runtime-tool/validate.go
index bdf4d5eb2..9e08f4525 100644
--- a/cmd/oci-runtime-tool/validate.go
+++ b/cmd/oci-runtime-tool/validate.go
@@ -10,6 +10,7 @@ import (
 
 var bundleValidateFlags = []cli.Flag{
 	cli.StringFlag{Name: "path", Value: ".", Usage: "path to a bundle"},
+	cli.StringFlag{Name: "platform", Value: "linux", Usage: "platform of the target bundle (linux, windows, solaris)"},
 }
 
 var bundleValidateCommand = cli.Command{
@@ -18,9 +19,9 @@ var bundleValidateCommand = cli.Command{
 	Flags:  bundleValidateFlags,
 	Before: before,
 	Action: func(context *cli.Context) error {
-		inputPath := context.String("path")
 		hostSpecific := context.GlobalBool("host-specific")
-		platform := context.GlobalString("platform")
+		inputPath := context.String("path")
+		platform := context.String("platform")
 		v, err := validate.NewValidatorFromPath(inputPath, hostSpecific, platform)
 		if err != nil {
 			return err
diff --git a/man/oci-runtime-tool-validate.1.md b/man/oci-runtime-tool-validate.1.md
index d9b02175e..fba012026 100644
--- a/man/oci-runtime-tool-validate.1.md
+++ b/man/oci-runtime-tool-validate.1.md
@@ -18,6 +18,10 @@ Validate an OCI bundle
 **--path**=PATH
   Path to bundle. The default is current working directory.
 
+**--platform**=PLATFORM
+  Platform of the target bundle. (linux, windows, solaris) (default: "linux")
+  It will be overwritten by the host platform if the global option '--host-specific' was set.
+
 # SEE ALSO
 **oci-runtime-tool**(1)
 
diff --git a/man/oci-runtime-tool.1.md b/man/oci-runtime-tool.1.md
index 47795300c..27b2e1708 100644
--- a/man/oci-runtime-tool.1.md
+++ b/man/oci-runtime-tool.1.md
@@ -32,9 +32,6 @@ oci-runtime-tool is a collection of tools for working with the [OCI runtime spec
 **--log-level**=LEVEL
   Log level (panic, fatal, error, warn, info, or debug) (default: "error").
 
-**--platform**
-  Platform the tool targets.
-
 **-v**, **--version**
   Print version information.
 
diff --git a/validate/validate.go b/validate/validate.go
index 94d4f9519..de6e4603d 100644
--- a/validate/validate.go
+++ b/validate/validate.go
@@ -9,6 +9,7 @@ import (
 	"os"
 	"path/filepath"
 	"reflect"
+	"runtime"
 	"strings"
 	"unicode"
 	"unicode/utf8"
@@ -52,6 +53,9 @@ type Validator struct {
 
 // NewValidator creates a Validator
 func NewValidator(spec *rspec.Spec, bundlePath string, hostSpecific bool, platform string) Validator {
+	if hostSpecific && platform != runtime.GOOS {
+		platform = runtime.GOOS
+	}
 	return Validator{
 		spec:         spec,
 		bundlePath:   bundlePath,
@@ -62,6 +66,9 @@ func NewValidator(spec *rspec.Spec, bundlePath string, hostSpecific bool, platfo
 
 // NewValidatorFromPath creates a Validator with specified bundle path
 func NewValidatorFromPath(bundlePath string, hostSpecific bool, platform string) (Validator, error) {
+	if hostSpecific && platform != runtime.GOOS {
+		platform = runtime.GOOS
+	}
 	if bundlePath == "" {
 		return Validator{}, fmt.Errorf("Bundle path shouldn't be empty")
 	}