diff --git a/runner/runner.go b/runner/runner.go
index 4466586..b21afbe 100644
--- a/runner/runner.go
+++ b/runner/runner.go
@@ -140,7 +140,7 @@ func (r *Runner) Start(ctxt context.Context) error {
 	_, ok = r.opts["user-data-dir"]
 	if !ok {
 		r.opts["user-data-dir"], err = ioutil.TempDir(
-			DefaultUserDataTmpDir, fmt.Sprintf(DefaultUserDataDirPrefix, r.Port()),
+			defaultUserDataTmpDir, fmt.Sprintf(DefaultUserDataDirPrefix, r.Port()),
 		)
 		if err != nil {
 			return err
diff --git a/runner/runner_unix.go b/runner/runner_unix.go
index 860e9f0..3f0c1d8 100644
--- a/runner/runner_unix.go
+++ b/runner/runner_unix.go
@@ -7,10 +7,10 @@ import (
 	"syscall"
 )
 
-const (
+var (
 	// DefaultUserDataTmpDir is the default directory path for created user
 	// data directories.
-	DefaultUserDataTmpDir = "/tmp"
+	defaultUserDataTmpDir = "/tmp"
 )
 
 // KillProcessGroup is a Chrome command line option that will instruct the
diff --git a/runner/runner_windows.go b/runner/runner_windows.go
index fe61fca..4d274e6 100644
--- a/runner/runner_windows.go
+++ b/runner/runner_windows.go
@@ -2,8 +2,10 @@
 
 package runner
 
-const (
-	DefaultUserDataTmpDir = `c:\temp`
+import "os"
+
+var (
+	defaultUserDataTmpDir = os.Getenv("USERPROFILE") + `\AppData\Local`
 )
 
 // KillProcessGroup is a Chrome command line option that will instruct the