diff --git a/app/src/main/java/org/lsposed/manager/util/CloudflareDNS.java b/app/src/main/java/org/lsposed/manager/util/CloudflareDNS.java
index 5ab0dd17e..460afb8d2 100644
--- a/app/src/main/java/org/lsposed/manager/util/CloudflareDNS.java
+++ b/app/src/main/java/org/lsposed/manager/util/CloudflareDNS.java
@@ -80,6 +80,14 @@ public List<InetAddress> lookup(@NonNull String hostname) throws UnknownHostExce
                 Log.w(App.TAG, "DoH resolver unreachable, falling back to system DNS for this session: " + e.getMessage());
             }
         }
-        return SYSTEM.lookup(hostname);
+        try {
+            return SYSTEM.lookup(hostname);
+        } catch (SecurityException e) {
+            var message = e.getMessage();
+            var unknownHost = new UnknownHostException(
+                    message == null ? hostname : hostname + ": " + message);
+            unknownHost.initCause(e);
+            throw unknownHost;
+        }
     }
 }