diff --git a/internal/common/common_unix.go b/internal/common/common_unix.go
index 9e393bcf..60520281 100644
--- a/internal/common/common_unix.go
+++ b/internal/common/common_unix.go
@@ -41,8 +41,7 @@ func CallLsofWithContext(ctx context.Context, invoke Invoker, pid int32, args ..
 }
 
 func CallPgrepWithContext(ctx context.Context, invoke Invoker, pid int32) ([]int32, error) {
-	var cmd []string
-	cmd = []string{"-P", strconv.Itoa(int(pid))}
+	cmd := []string{"-P", strconv.Itoa(int(pid))}
 	pgrep, err := exec.LookPath("pgrep")
 	if err != nil {
 		return []int32{}, err