1 files changed, 3 insertions, 3 deletions
diff --git a/app/src/main/java/com/wireguard/config/Config.java b/app/src/main/java/com/wireguard/config/Config.java
index 7b9bcab3..d2c1395f 100644
--- a/app/src/main/java/com/wireguard/config/Config.java
+++ b/app/src/main/java/com/wireguard/config/Config.java
@@ -30,9 +30,7 @@ public final class Config {
     private final List<Peer> peers;
 
     private Config(final Builder builder) {
-        if (builder.interfaze == null)
-            throw new IllegalArgumentException("An [Interface] section is required");
-        interfaze = builder.interfaze;
+        interfaze = Objects.requireNonNull(builder.interfaze, "An [Interface] section is required");
         // Defensively copy to ensure immutability even if the Builder is reused.
         peers = Collections.unmodifiableList(new ArrayList<>(builder.peers));
     }
@@ -189,6 +187,8 @@ public final class Config {
         }
 
         public Config build() {
+            if (interfaze == null)
+                throw new IllegalArgumentException("An [Interface] section is required");
             return new Config(this);
         }