diff --git a/app/src/main/java/com/wireguard/config/InetEndpoint.java b/app/src/main/java/com/wireguard/config/InetEndpoint.java
index f64bc25a..5f6a90d5 100644
--- a/app/src/main/java/com/wireguard/config/InetEndpoint.java
+++ b/app/src/main/java/com/wireguard/config/InetEndpoint.java
@@ -51,7 +51,7 @@ public final class InetEndpoint {
         } catch (final URISyntaxException e) {
             throw new IllegalArgumentException(e);
         }
-        if (uri.getPort() < 0)
+        if (uri.getPort() < 0 || uri.getPort() > 65535)
             throw new ParseException(InetEndpoint.class, endpoint, "Missing/invalid port number");
         try {
             InetAddresses.parse(uri.getHost());