diff --git a/lock_test.go b/lock_test.go
index a2b5cb2d3..c07abb239 100644
--- a/lock_test.go
+++ b/lock_test.go
@@ -124,7 +124,7 @@ var staleLockTests = []struct {
 	{
 		timestamp: time.Now(),
 		stale:     true,
-		pid:       os.Getpid() + 500,
+		pid:       os.Getpid() + 500000,
 	},
 }
 
@@ -158,7 +158,7 @@ func TestLockWithStaleLock(t *testing.T) {
 	id2, err := createFakeLock(repo, time.Now().Add(-time.Minute), os.Getpid())
 	OK(t, err)
 
-	id3, err := createFakeLock(repo, time.Now().Add(-time.Minute), os.Getpid()+500)
+	id3, err := createFakeLock(repo, time.Now().Add(-time.Minute), os.Getpid()+500000)
 	OK(t, err)
 
 	OK(t, restic.RemoveStaleLocks(repo))