diff --git a/pkg/kubelet/network/exec/exec.go b/pkg/kubelet/network/exec/exec.go
index feddebb0c7b..522dbd50b7b 100644
--- a/pkg/kubelet/network/exec/exec.go
+++ b/pkg/kubelet/network/exec/exec.go
@@ -53,7 +53,6 @@ import (
 	"io/ioutil"
 	"path"
 	"strings"
-	"syscall"
 
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet/dockertools"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet/network"
@@ -72,7 +71,6 @@ const (
 	setUpCmd    = "setup"
 	tearDownCmd = "teardown"
 	execDir     = "/usr/libexec/kubernetes/kubelet-plugins/net/exec/"
-	X_OK        = 0x1
 )
 
 func ProbeNetworkPlugins() []network.NetworkPlugin {
@@ -120,7 +118,7 @@ func (plugin *execNetworkPlugin) Name() string {
 }
 
 func (plugin *execNetworkPlugin) validate() error {
-	if syscall.Access(plugin.getExecutable(), X_OK) != nil {
+	if !isExecutable(plugin.getExecutable()) {
 		errStr := fmt.Sprintf("Invalid exec plugin. Executable '%s' does not have correct permissions.", plugin.execName)
 		return errors.New(errStr)
 	}
diff --git a/pkg/kubelet/network/exec/exec_unix.go b/pkg/kubelet/network/exec/exec_unix.go
new file mode 100644
index 00000000000..e843a7a966d
--- /dev/null
+++ b/pkg/kubelet/network/exec/exec_unix.go
@@ -0,0 +1,27 @@
+// +build !windows
+
+/*
+Copyright 2015 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package exec
+
+import "syscall"
+
+const X_OK = 0x1
+
+func isExecutable(path string) bool {
+	return syscall.Access(path, X_OK) == nil
+}
diff --git a/pkg/kubelet/network/exec/exec_unsupported.go b/pkg/kubelet/network/exec/exec_unsupported.go
new file mode 100644
index 00000000000..04b8ddbccfe
--- /dev/null
+++ b/pkg/kubelet/network/exec/exec_unsupported.go
@@ -0,0 +1,23 @@
+// +build windows
+
+/*
+Copyright 2015 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package exec
+
+func isExecutable(path string) bool {
+	return false
+}