diff --git a/vertx-grpc/src/test/java/io/vertx/ext/grpc/NativeTransportTest.java b/vertx-grpc/src/test/java/io/vertx/ext/grpc/NativeTransportTest.java
index f5e675c..8211c38 100644
--- a/vertx-grpc/src/test/java/io/vertx/ext/grpc/NativeTransportTest.java
+++ b/vertx-grpc/src/test/java/io/vertx/ext/grpc/NativeTransportTest.java
@@ -2,8 +2,7 @@
 
 import examples.GreeterGrpc;
 import io.vertx.core.*;
-import io.vertx.core.impl.VertxBootstrapImpl;
-import io.vertx.core.spi.transport.Transport;
+import io.vertx.core.transport.Transport;
 import io.vertx.ext.unit.TestContext;
 import io.vertx.ext.unit.junit.VertxUnitRunner;
 import io.vertx.grpc.VertxServerBuilder;
@@ -41,7 +40,7 @@ private void testInternal(TestContext ctx, Vertx vertx) {
   }
 
   private void assumeNativeTransport() {
-    Transport nativeTransport = VertxBootstrapImpl.nativeTransport();
-    Assume.assumeTrue(nativeTransport != null && nativeTransport.isAvailable());
+    Transport nativeTransport = Transport.nativeTransport();
+    Assume.assumeTrue(nativeTransport != null && nativeTransport.available());
   }
 }