diff --git a/client.go b/client.go
index 5fef9344f..4326a8f3a 100644
--- a/client.go
+++ b/client.go
@@ -26,7 +26,7 @@ import (
 
 const (
 	// Version is the current version of Elastic.
-	Version = "5.0.50"
+	Version = "5.0.51"
 
 	// DefaultURL is the default endpoint of Elasticsearch on the local machine.
 	// It is used e.g. when initializing a new Client without a specific URL.
diff --git a/msearch.go b/msearch.go
index 52ca9ee74..5d0949d9c 100644
--- a/msearch.go
+++ b/msearch.go
@@ -68,7 +68,7 @@ func (s *MultiSearchService) Do(ctx context.Context) (*MultiSearchResult, error)
 		if err != nil {
 			return nil, err
 		}
-		body, err := json.Marshal(sr.body())
+		body, err := json.Marshal(sr.Body())
 		if err != nil {
 			return nil, err
 		}
diff --git a/search_request.go b/search_request.go
index ad22a5a3f..03513085f 100644
--- a/search_request.go
+++ b/search_request.go
@@ -194,9 +194,12 @@ func (r *SearchRequest) header() interface{} {
 	return h
 }
 
-// body is used by MultiSearch to get information about the search body
+// Body allows to access the search body of the request, as generated by the DSL.
+// Notice that Body is read-only. You must not change the request body.
+//
+// Body is used e.g. by MultiSearch to get information about the search body
 // of one SearchRequest.
-// See https://www.elastic.co/guide/en/elasticsearch/reference/5.2/search-multi-search.html
-func (r *SearchRequest) body() interface{} {
+// See https://www.elastic.co/guide/en/elasticsearch/reference/5.6/search-multi-search.html
+func (r *SearchRequest) Body() interface{} {
 	return r.source
 }