diff --git a/implementation/src/main/java/io/smallrye/mutiny/groups/UniOr.java b/implementation/src/main/java/io/smallrye/mutiny/groups/UniOr.java
index f3178b5ba..3d14f5994 100644
--- a/implementation/src/main/java/io/smallrye/mutiny/groups/UniOr.java
+++ b/implementation/src/main/java/io/smallrye/mutiny/groups/UniOr.java
@@ -2,6 +2,7 @@
 
 import static io.smallrye.mutiny.helpers.ParameterValidation.nonNull;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
@@ -23,7 +24,9 @@ public Uni<T> uni(Uni<T> other) {
 
     @SafeVarargs
     public final Uni<T> unis(Uni<T>... other) {
-        List<Uni<T>> list = Arrays.asList(other);
+        List<Uni<T>> list = new ArrayList<>();
+        list.add(upstream);
+        list.addAll(Arrays.asList(other));
         return Infrastructure.onUniCreation(new UniOrCombination<>(list));
     }
 
diff --git a/implementation/src/main/java/io/smallrye/mutiny/infrastructure/MultiInterceptor.java b/implementation/src/main/java/io/smallrye/mutiny/infrastructure/MultiInterceptor.java
index 8e43e554d..2a5a12b6a 100644
--- a/implementation/src/main/java/io/smallrye/mutiny/infrastructure/MultiInterceptor.java
+++ b/implementation/src/main/java/io/smallrye/mutiny/infrastructure/MultiInterceptor.java
@@ -13,12 +13,17 @@
  */
 public interface MultiInterceptor {
 
+    /**
+     * Default ordinal value.
+     */
+    int DEFAULT_ORDINAL = 100;
+
     /**
      * @return the interceptor ordinal. The ordinal is used to sort the interceptor. Lower value are executed first.
      *         Default is 100.
      */
     default int ordinal() {
-        return 100;
+        return DEFAULT_ORDINAL;
     }
 
     /**
diff --git a/implementation/src/test/java/io/smallrye/mutiny/infrastructure/MultiInterceptorTest.java b/implementation/src/test/java/io/smallrye/mutiny/infrastructure/MultiInterceptorTest.java
new file mode 100644
index 000000000..228f95109
--- /dev/null
+++ b/implementation/src/test/java/io/smallrye/mutiny/infrastructure/MultiInterceptorTest.java
@@ -0,0 +1,30 @@
+package io.smallrye.mutiny.infrastructure;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.reactivestreams.Subscriber;
+import org.testng.annotations.Test;
+
+import io.smallrye.mutiny.Multi;
+import io.smallrye.mutiny.operators.AbstractMulti;
+import io.smallrye.mutiny.test.Mocks;
+
+public class MultiInterceptorTest {
+
+    @Test
+    public void testDefaultInterceptorBehavior() {
+        MultiInterceptor interceptor = new MultiInterceptor() {
+            // Default.
+        };
+
+        assertThat(interceptor.ordinal()).isEqualTo(MultiInterceptor.DEFAULT_ORDINAL);
+        Multi<String> multi = new AbstractMulti<String>() {
+            // Do nothing
+        };
+        assertThat(interceptor.onMultiCreation(multi)).isSameAs(multi);
+
+        Subscriber<Object> subscriber = Mocks.subscriber();
+        assertThat(interceptor.onSubscription(multi, subscriber)).isSameAs(subscriber);
+    }
+
+}
diff --git a/implementation/src/test/java/io/smallrye/mutiny/operators/UniOrTest.java b/implementation/src/test/java/io/smallrye/mutiny/operators/UniOrTest.java
index ad0ce3121..060ec625f 100644
--- a/implementation/src/test/java/io/smallrye/mutiny/operators/UniOrTest.java
+++ b/implementation/src/test/java/io/smallrye/mutiny/operators/UniOrTest.java
@@ -140,4 +140,26 @@ public void testWithThreeImmediateChallengers() {
         subscriber.assertCompletedSuccessfully().assertItem(1);
     }
 
+    @Test
+    public void testUniOrWithAnotherUni() {
+        UniAssertSubscriber<String> subscriber = UniAssertSubscriber.create();
+        Uni.createFrom().item("foo").or().uni(Uni.createFrom().item("bar")).subscribe()
+                .withSubscriber(subscriber);
+        subscriber.assertCompletedSuccessfully().assertItem("foo");
+    }
+
+    @Test
+    public void testUniOrWithDelayedUni() {
+        Uni<String> first = Uni.createFrom().item("foo").onItem().delayIt().onExecutor(executor)
+                .by(Duration.ofMillis(10));
+        Uni<String> second = Uni.createFrom().item("bar").onItem().delayIt().onExecutor(executor)
+                .by(Duration.ofMillis(1000));
+        Uni<String> third = Uni.createFrom().item("baz").onItem().delayIt().onExecutor(executor)
+                .by(Duration.ofMillis(10000));
+
+        assertThat(third.or().unis(first, second).await().indefinitely()).isEqualTo("foo");
+        assertThat(second.or().unis(third, first).await().indefinitely()).isEqualTo("foo");
+        assertThat(first.or().unis(third, second).await().indefinitely()).isEqualTo("foo");
+    }
+
 }
diff --git a/implementation/src/test/java/io/smallrye/mutiny/subscription/UniSubscriptionTest.java b/implementation/src/test/java/io/smallrye/mutiny/subscription/UniSubscriptionTest.java
new file mode 100644
index 000000000..aa352e855
--- /dev/null
+++ b/implementation/src/test/java/io/smallrye/mutiny/subscription/UniSubscriptionTest.java
@@ -0,0 +1,19 @@
+package io.smallrye.mutiny.subscription;
+
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+import org.testng.annotations.Test;
+
+public class UniSubscriptionTest {
+    @Test
+    public void testDefaultRequestMethod() {
+        UniSubscription subscription = () -> {
+            // do nothing
+        };
+
+        subscription.request(12);
+        assertThatThrownBy(() -> subscription.request(-23)).isInstanceOf(IllegalArgumentException.class);
+        assertThatThrownBy(() -> subscription.request(0)).isInstanceOf(IllegalArgumentException.class);
+        subscription.request(1);
+    }
+}
diff --git a/reactive-streams-operators/src/test/java/tck/ReactiveStreamsEngineImplTck.java b/reactive-streams-operators/src/test/java/tck/ReactiveStreamsEngineImplTck.java
index d7816a054..662b8d64b 100644
--- a/reactive-streams-operators/src/test/java/tck/ReactiveStreamsEngineImplTck.java
+++ b/reactive-streams-operators/src/test/java/tck/ReactiveStreamsEngineImplTck.java
@@ -10,7 +10,7 @@
  */
 public class ReactiveStreamsEngineImplTck extends ReactiveStreamsTck<Engine> {
 
-    static TestEnvironment ENV = new TestEnvironment(true);
+    static TestEnvironment ENV = new TestEnvironment();
 
     public ReactiveStreamsEngineImplTck() {
         super(ENV);