diff --git a/src/main/java/org/springframework/data/repository/reactive/RxJava1CrudRepository.java b/src/main/java/org/springframework/data/repository/reactive/RxJava1CrudRepository.java
index 3cf8d4a1f..ac90e7855 100644
--- a/src/main/java/org/springframework/data/repository/reactive/RxJava1CrudRepository.java
+++ b/src/main/java/org/springframework/data/repository/reactive/RxJava1CrudRepository.java
@@ -28,9 +28,11 @@ import org.springframework.data.repository.Repository;
  *
  * @author Mark Paluch
  * @since 2.0
+ * @deprecated interface to be removed in 2.0 RC1.
  * @see Single
  * @see Observable
  */
+@Deprecated
 @NoRepositoryBean
 public interface RxJava1CrudRepository<T, ID> extends Repository<T, ID> {
 
diff --git a/src/main/java/org/springframework/data/repository/reactive/RxJava1SortingRepository.java b/src/main/java/org/springframework/data/repository/reactive/RxJava1SortingRepository.java
index 2c7855f9e..7b77fe246 100644
--- a/src/main/java/org/springframework/data/repository/reactive/RxJava1SortingRepository.java
+++ b/src/main/java/org/springframework/data/repository/reactive/RxJava1SortingRepository.java
@@ -27,11 +27,13 @@ import org.springframework.data.repository.NoRepositoryBean;
  *
  * @author Mark Paluch
  * @since 2.0
+ * @deprecated interface to be removed in 2.0 RC1.
  * @see Sort
  * @see Single
  * @see Observable
  * @see RxJava1CrudRepository
  */
+@Deprecated
 @NoRepositoryBean
 public interface RxJava1SortingRepository<T, ID> extends RxJava1CrudRepository<T, ID> {
 
diff --git a/src/test/java/org/springframework/data/repository/core/support/ReactiveRepositoryInformationUnitTests.java b/src/test/java/org/springframework/data/repository/core/support/ReactiveRepositoryInformationUnitTests.java
index a2a755ec0..bc8fcab14 100644
--- a/src/test/java/org/springframework/data/repository/core/support/ReactiveRepositoryInformationUnitTests.java
+++ b/src/test/java/org/springframework/data/repository/core/support/ReactiveRepositoryInformationUnitTests.java
@@ -18,6 +18,7 @@ package org.springframework.data.repository.core.support;
 import static org.hamcrest.Matchers.*;
 import static org.junit.Assert.*;
 
+import io.reactivex.Completable;
 import io.reactivex.Flowable;
 import reactor.core.publisher.Flux;
 import rx.Observable;
@@ -29,10 +30,10 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.junit.MockitoJUnitRunner;
 import org.reactivestreams.Publisher;
+import org.springframework.data.repository.Repository;
 import org.springframework.data.repository.core.RepositoryInformation;
 import org.springframework.data.repository.reactive.ReactiveCrudRepository;
 import org.springframework.data.repository.reactive.ReactiveSortingRepository;
-import org.springframework.data.repository.reactive.RxJava1CrudRepository;
 import org.springframework.data.repository.reactive.RxJava2CrudRepository;
 
 /**
@@ -133,7 +134,12 @@ public class ReactiveRepositoryInformationUnitTests {
 		return information.getTargetClassMethod(repositoryType.getMethod(methodName, args));
 	}
 
-	interface RxJava1InterfaceWithGenerics extends RxJava1CrudRepository<User, String> {}
+	interface RxJava1InterfaceWithGenerics extends Repository<User, String> {
+
+		Observable<User> saveAll(Observable<User> entities);
+
+		Completable deleteAll();
+	}
 
 	interface RxJava2InterfaceWithGenerics extends RxJava2CrudRepository<User, String> {}