diff --git a/system/exec_cmd_runner.go b/system/exec_cmd_runner.go
index 6cab6558..a6ec3e05 100644
--- a/system/exec_cmd_runner.go
+++ b/system/exec_cmd_runner.go
@@ -92,3 +92,7 @@ func (r execCmdRunner) buildComplexCommand(cmd Command) *exec.Cmd {
 
 	return execCmd
 }
+
+func newExecCmd(name string, args ...string) *exec.Cmd {
+	return exec.Command(name, args...)
+}
diff --git a/system/exec_cmd_runner_unix.go b/system/exec_cmd_runner_unix.go
index e049f11a..5096aa45 100644
--- a/system/exec_cmd_runner_unix.go
+++ b/system/exec_cmd_runner_unix.go
@@ -1,16 +1,12 @@
+//go:build !windows
 // +build !windows
 
 package system
 
 import (
-	"os/exec"
 	"strings"
 )
 
-func newExecCmd(name string, args ...string) *exec.Cmd {
-	return exec.Command(name, args...)
-}
-
 // mergeEnv merges system and command environments variables.  Command variables
 // override any system variable with the same key.
 func mergeEnv(sysEnv []string, cmdEnv map[string]string) []string {
diff --git a/system/exec_cmd_runner_windows.go b/system/exec_cmd_runner_windows.go
index 5b057470..bcd6247b 100644
--- a/system/exec_cmd_runner_windows.go
+++ b/system/exec_cmd_runner_windows.go
@@ -1,15 +1,10 @@
 package system
 
 import (
-	"os/exec"
 	"sort"
 	"strings"
 )
 
-func newExecCmd(name string, args ...string) *exec.Cmd {
-	return exec.Command(name, args...)
-}
-
 // mergeEnv case-insensitive merge of system and command environments variables.
 // Command variables override any system variable with the same key.
 func mergeEnv(sysEnv []string, cmdEnv map[string]string) []string {