diff --git a/os/genv/genv.go b/os/genv/genv.go
index e3635cef1..8ab463420 100644
--- a/os/genv/genv.go
+++ b/os/genv/genv.go
@@ -60,7 +60,14 @@ func Build(m map[string]string) []string {
 	return array
 }
 
-// Remove deletes a single environment variable.
-func Remove(key string) error {
-	return os.Unsetenv(key)
+// Remove deletes one or more environment variables.
+func Remove(key ...string) error {
+	var err error
+	for _, v := range key {
+		err = os.Unsetenv(v)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
 }
diff --git a/os/gproc/gproc_process.go b/os/gproc/gproc_process.go
index 48eb92394..a3923728f 100644
--- a/os/gproc/gproc_process.go
+++ b/os/gproc/gproc_process.go
@@ -11,6 +11,7 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"runtime"
 	"strings"
 )
 
@@ -115,7 +116,9 @@ func (p *Process) Kill() error {
 		if p.Manager != nil {
 			p.Manager.processes.Remove(p.Pid())
 		}
-		p.Process.Release()
+		if runtime.GOOS != "windows" {
+			p.Process.Release()
+		}
 		p.Process.Wait()
 		return nil
 	} else {