diff --git a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs
index 595dab91..7e3e90f1 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs
@@ -121,7 +121,7 @@ public class CoreConfigSingboxService
                             }
                         }
                     }
-                    ret.Data = customConfigNode.ToJsonString(new() { WriteIndented = true });
+                    ret.Data = JsonUtils.Serialize(customConfigNode);
                 }
             }
             else
@@ -504,7 +504,7 @@ public class CoreConfigSingboxService
                             }
                         }
                     }
-                    ret.Data = customConfigNode.ToJsonString(new() { WriteIndented = true });
+                    ret.Data = JsonUtils.Serialize(customConfigNode);
                 }
             }
             else
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
index 75fff372..377ba512 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
@@ -94,7 +94,7 @@ public class CoreConfigV2rayService
                             }
                         }
                     }
-                    ret.Data = customConfigNode.ToJsonString(new() { WriteIndented = true });
+                    ret.Data = JsonUtils.Serialize(customConfigNode);
                 }
             }
             else
@@ -298,7 +298,7 @@ public class CoreConfigV2rayService
                             }
                         }
                     }
-                    ret.Data = customConfigNode.ToJsonString(new() { WriteIndented = true });
+                    ret.Data = JsonUtils.Serialize(customConfigNode);
                 }
             }
             else