diff --git a/main_test.go b/main_test.go
index b0b39ff..f3c8255 100644
--- a/main_test.go
+++ b/main_test.go
@@ -78,7 +78,7 @@ func TestRun(t *testing.T) {
 					t.Error(msg)
 					return
 				}
-				err = os.WriteFile("dns.txt", []byte(body.Target), 0x777)
+				err = os.WriteFile("dns.txt", []byte(body.Target), 0x644)
 				if err != nil {
 					msg := fmt.Sprintf("could write dns.txt: %v", err)
 					http.Error(w, msg, http.StatusInternalServerError)