diff --git a/src/main/java/org/springframework/data/repository/PagingAndSortingRepository.java b/src/main/java/org/springframework/data/repository/PagingAndSortingRepository.java
index 7fe7f7b0c..176b85341 100644
--- a/src/main/java/org/springframework/data/repository/PagingAndSortingRepository.java
+++ b/src/main/java/org/springframework/data/repository/PagingAndSortingRepository.java
@@ -34,15 +34,17 @@ public interface PagingAndSortingRepository<T, ID> extends CrudRepository<T, ID>
 	/**
 	 * Returns all entities sorted by the given options.
 	 *
-	 * @param sort
+	 * @param sort the {@link Sort} specification to sort the results by, can be {@link Sort#unsorted()}, must not be
+	 *          {@literal null}.
 	 * @return all entities sorted by the given options
 	 */
 	Iterable<T> findAll(Sort sort);
 
 	/**
-	 * Returns a {@link Page} of entities meeting the paging restriction provided in the {@code Pageable} object.
+	 * Returns a {@link Page} of entities meeting the paging restriction provided in the {@link Pageable} object.
 	 *
-	 * @param pageable must not be {@literal null}.
+	 * @param pageable the pageable to request a paged result, can be {@link Pageable#unpaged()}, must not be
+	 *          {@literal null}.
 	 * @return a page of entities
 	 */
 	Page<T> findAll(Pageable pageable);
diff --git a/src/main/java/org/springframework/data/repository/history/RevisionRepository.java b/src/main/java/org/springframework/data/repository/history/RevisionRepository.java
index db277b6b6..03bc0c35d 100755
--- a/src/main/java/org/springframework/data/repository/history/RevisionRepository.java
+++ b/src/main/java/org/springframework/data/repository/history/RevisionRepository.java
@@ -55,7 +55,8 @@ public interface RevisionRepository<T, ID, N extends Number & Comparable<N>> ext
 	 * implementations have to support sorting by all properties.
 	 *
 	 * @param id must not be {@literal null}.
-	 * @param pageable
+	 * @param pageable the pageable to request a paged result, can be {@link Pageable#unpaged()}, must not be
+	 *          {@literal null}.
 	 * @see RevisionSort
 	 * @return
 	 */
diff --git a/src/main/java/org/springframework/data/repository/query/QueryByExampleExecutor.java b/src/main/java/org/springframework/data/repository/query/QueryByExampleExecutor.java
index eb804cb09..d524aaf60 100644
--- a/src/main/java/org/springframework/data/repository/query/QueryByExampleExecutor.java
+++ b/src/main/java/org/springframework/data/repository/query/QueryByExampleExecutor.java
@@ -56,7 +56,8 @@ public interface QueryByExampleExecutor<T> {
 	 * found an empty {@link Iterable} is returned.
 	 *
 	 * @param example must not be {@literal null}.
-	 * @param sort the {@link Sort} specification to sort the results by, must not be {@literal null}.
+	 * @param sort the {@link Sort} specification to sort the results by, may be {@link Sort#unsorted()}, must not be
+	 *          {@literal null}.
 	 * @return all entities matching the given {@link Example}.
 	 * @since 1.10
 	 */
@@ -67,7 +68,8 @@ public interface QueryByExampleExecutor<T> {
 	 * {@link Page} is returned.
 	 *
 	 * @param example must not be {@literal null}.
-	 * @param pageable must not be {@literal null}.
+	 * @param pageable the pageable to request a paged result, can be {@link Pageable#unpaged()}, must not be
+	 *          {@literal null}.
 	 * @return a {@link Page} of entities matching the given {@link Example}.
 	 */
 	<S extends T> Page<S> findAll(Example<S> example, Pageable pageable);
diff --git a/src/main/java/org/springframework/data/repository/query/ReactiveQueryByExampleExecutor.java b/src/main/java/org/springframework/data/repository/query/ReactiveQueryByExampleExecutor.java
index e45a2d8cf..0ed66aa7f 100644
--- a/src/main/java/org/springframework/data/repository/query/ReactiveQueryByExampleExecutor.java
+++ b/src/main/java/org/springframework/data/repository/query/ReactiveQueryByExampleExecutor.java
@@ -55,7 +55,8 @@ public interface ReactiveQueryByExampleExecutor<T> {
 	 * found {@link Flux#empty()} is returned.
 	 *
 	 * @param example must not be {@literal null}.
-	 * @param sort the {@link Sort} specification to sort the results by, must not be {@literal null}.
+	 * @param sort the {@link Sort} specification to sort the results by, may be {@link Sort#unsorted()}, must not be
+	 *          {@literal null}.
 	 * @return all entities matching the given {@link Example}.
 	 */
 	<S extends T> Flux<S> findAll(Example<S> example, Sort sort);
diff --git a/src/main/java/org/springframework/data/repository/reactive/ReactiveSortingRepository.java b/src/main/java/org/springframework/data/repository/reactive/ReactiveSortingRepository.java
index 2b2e903fb..1a7bdb37f 100644
--- a/src/main/java/org/springframework/data/repository/reactive/ReactiveSortingRepository.java
+++ b/src/main/java/org/springframework/data/repository/reactive/ReactiveSortingRepository.java
@@ -38,7 +38,8 @@ public interface ReactiveSortingRepository<T, ID> extends ReactiveCrudRepository
 	/**
 	 * Returns all entities sorted by the given options.
 	 *
-	 * @param sort must not be {@literal null}.
+	 * @param sort the {@link Sort} specification to sort the results by, can be {@link Sort#unsorted()}, must not be
+	 *          {@literal null}.
 	 * @return all entities sorted by the given options.
 	 * @throws IllegalArgumentException in case the given {@link Sort} is {@literal null}.
 	 */
diff --git a/src/main/java/org/springframework/data/repository/reactive/RxJava2SortingRepository.java b/src/main/java/org/springframework/data/repository/reactive/RxJava2SortingRepository.java
index 55577681f..7b87f2a21 100644
--- a/src/main/java/org/springframework/data/repository/reactive/RxJava2SortingRepository.java
+++ b/src/main/java/org/springframework/data/repository/reactive/RxJava2SortingRepository.java
@@ -36,7 +36,8 @@ public interface RxJava2SortingRepository<T, ID> extends RxJava2CrudRepository<T
 	/**
 	 * Returns all entities sorted by the given options.
 	 *
-	 * @param sort must not be {@literal null}.
+	 * @param sort the {@link Sort} specification to sort the results by, may be {@link Sort#unsorted()}, must not be
+	 *          {@literal null}.
 	 * @return all entities sorted by the given options.
 	 */
 	Flowable<T> findAll(Sort sort);
diff --git a/src/main/java/org/springframework/data/repository/reactive/RxJava3SortingRepository.java b/src/main/java/org/springframework/data/repository/reactive/RxJava3SortingRepository.java
index ec972baa9..e4cb19da5 100644
--- a/src/main/java/org/springframework/data/repository/reactive/RxJava3SortingRepository.java
+++ b/src/main/java/org/springframework/data/repository/reactive/RxJava3SortingRepository.java
@@ -36,7 +36,8 @@ public interface RxJava3SortingRepository<T, ID> extends RxJava3CrudRepository<T
 	/**
 	 * Returns all entities sorted by the given options.
 	 *
-	 * @param sort must not be {@literal null}.
+	 * @param sort the {@link Sort} specification to sort the results by, may be {@link Sort#unsorted()}, must not be
+	 *          {@literal null}.
 	 * @return all entities sorted by the given options.
 	 */
 	Flowable<T> findAll(Sort sort);
diff --git a/src/main/java/org/springframework/data/repository/support/RepositoryInvoker.java b/src/main/java/org/springframework/data/repository/support/RepositoryInvoker.java
index db80cfb7d..a22b54386 100644
--- a/src/main/java/org/springframework/data/repository/support/RepositoryInvoker.java
+++ b/src/main/java/org/springframework/data/repository/support/RepositoryInvoker.java
@@ -60,7 +60,7 @@ public interface RepositoryInvoker extends RepositoryInvocationInformation {
 	 * contained in the given {@link Pageable}) or the plain equivalent to
 	 * {@link org.springframework.data.repository.CrudRepository#findAll()}.
 	 *
-	 * @param pageable can be {@literal null}.
+	 * @param pageable must not be {@literal null}.
 	 * @return the result of the invocation of the find-all method.
 	 * @throws IllegalStateException if the repository does not expose a find-all-method.
 	 */
@@ -72,7 +72,7 @@ public interface RepositoryInvoker extends RepositoryInvocationInformation {
 	 * {@link org.springframework.data.repository.PagingAndSortingRepository#findAll(Sort)}) or the plain equivalent to
 	 * {@link org.springframework.data.repository.CrudRepository#findAll()}.
 	 *
-	 * @param pageable can be {@literal null}.
+	 * @param sort must not be {@literal null}.
 	 * @return the result of the invocation of the find-all method.
 	 * @throws IllegalStateException if the repository does not expose a find-all-method.
 	 */