From 3f30378c737a4a610b1bdb7d4f12332abf2676fd Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Fri, 2 Jan 2026 03:33:23 +0100
Subject: [PATCH] tunnel: newIncompleteFuture requires API 31

Fixes: 3b6ab660 ("ui: raise min SDK to 24")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
 .../main/java/com/wireguard/android/backend/GoBackend.java   | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tunnel/src/main/java/com/wireguard/android/backend/GoBackend.java b/tunnel/src/main/java/com/wireguard/android/backend/GoBackend.java
index c9a13b2b..196836d2 100644
--- a/tunnel/src/main/java/com/wireguard/android/backend/GoBackend.java
+++ b/tunnel/src/main/java/com/wireguard/android/backend/GoBackend.java
@@ -404,7 +404,10 @@ public final class GoBackend implements Backend {
                     tunnel.onStateChange(State.DOWN);
                 }
             }
-            vpnService = vpnService.newIncompleteFuture();
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S)
+                vpnService = vpnService.newIncompleteFuture();
+            else
+                vpnService = new CompletableFuture<>();
             super.onDestroy();
         }