diff --git a/src/main/java/org/springframework/data/redis/util/ByteUtils.java b/src/main/java/org/springframework/data/redis/util/ByteUtils.java
index b508c11089..d3775d1220 100644
--- a/src/main/java/org/springframework/data/redis/util/ByteUtils.java
+++ b/src/main/java/org/springframework/data/redis/util/ByteUtils.java
@@ -93,7 +93,7 @@ public static byte[] concatAll(byte[]... arrays) {
 	 *
 	 * @param firstArray must not be {@literal null}
 	 * @param additionalArrays must not be {@literal null}
-	 * @return
+	 * @return the merged array.
 	 */
 	public static byte[][] mergeArrays(byte[] firstArray, byte[]... additionalArrays) {