diff --git a/tools/pidof/pidof.go b/tools/pidof/pidof.go
index 2700307..782629b 100644
--- a/tools/pidof/pidof.go
+++ b/tools/pidof/pidof.go
@@ -40,7 +40,7 @@ func Pidof(name string, cdr Commander) (int, error) {
 	}
 
 	for _, l := range strings.Split(string(p), "\n") {
-		if strings.Contains(l, name) {
+		if strings.Contains(l, name) && !strings.Contains(l, "grep") {
 			// nolint:gocritic
 			rePID, err := regexp.Compile(`(\d+)\s.+`)
 			if err != nil {
diff --git a/tools/pidof/pidof_test.go b/tools/pidof/pidof_test.go
index 1e5a54a..cb44712 100644
--- a/tools/pidof/pidof_test.go
+++ b/tools/pidof/pidof_test.go
@@ -1,9 +1,10 @@
-// nolint:gochecknoglobals,paralleltest,goerr113
+// nolint:gochecknoglobals,paralleltest,goerr113,funlen
 package pidof_test
 
 import (
 	"embed"
 	"fmt"
+	"log"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -52,9 +53,16 @@ func TestPidof(t *testing.T) {
 			2501,
 			nil,
 		},
+		{
+			"/root/.byteexec/wireguard-go w1nd50r",
+			"psa_alpine_3.txt",
+			0,
+			pidof.ErrPIDNotFound,
+		},
 	}
 
 	for _, table := range tables {
+		log.Printf("testfile: %s", table.data)
 		out, err := testdata.ReadFile("testdata/" + table.data)
 		assert.NoError(err)
 
diff --git a/tools/pidof/testdata/psa_alpine_3.txt b/tools/pidof/testdata/psa_alpine_3.txt
new file mode 100644
index 0000000..ee5f87b
--- /dev/null
+++ b/tools/pidof/testdata/psa_alpine_3.txt
@@ -0,0 +1 @@
+ 2566 root      0:00 grep .byteexec/wireguard-go w1nd50r