diff --git a/core/src/test/java/io/grpc/internal/OverrideAuthorityNameResolverTest.java b/core/src/test/java/io/grpc/internal/OverrideAuthorityNameResolverTest.java
index 5dbdd83f68..c5557d0dcd 100644
--- a/core/src/test/java/io/grpc/internal/OverrideAuthorityNameResolverTest.java
+++ b/core/src/test/java/io/grpc/internal/OverrideAuthorityNameResolverTest.java
@@ -27,7 +27,11 @@ import io.grpc.Attributes;
 import io.grpc.NameResolver;
 import java.net.URI;
 import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
 
+/** Unit tests for {@link OverrideAuthorityNameResolverFactory}. */
+@RunWith(JUnit4.class)
 public class OverrideAuthorityNameResolverTest {
   @Test
   public void overridesAuthority() {