diff --git a/channels/src/main/java/com/softwaremill/jox/Select.java b/channels/src/main/java/com/softwaremill/jox/Select.java
index dcb2ae9..e677929 100644
--- a/channels/src/main/java/com/softwaremill/jox/Select.java
+++ b/channels/src/main/java/com/softwaremill/jox/Select.java
@@ -48,7 +48,8 @@ public class Select {
      * <p>
      * If no clauses are given, throws {@link ChannelDoneException}.
      *
-     * @param clauses The clauses, from which one will be selected. Not {@code null}.
+     * @param clauses The clauses, from which one will be selected. Array must not be empty or {@code null} and
+     *                can't contain {@code null} values.
      * @return The value returned by the selected clause.
      * @throws ChannelClosedException When any of the channels is closed (done or in error).
      */
@@ -72,8 +73,8 @@ public static <U> U select(SelectClause<? extends U>... clauses) throws Interrup
      * <p>
      * If no clauses are given, returns {@link ChannelDone}.
      *
-     * @param clauses The clauses, from which one will be selected. Must not be empty or {@code null}.
-     *                Can't contain {@code null} values.
+     * @param clauses The clauses, from which one will be selected. Array must not be empty or {@code null} and
+     *                can't contain {@code null} values.
      * @return Either the value returned by the selected clause, or {@link ChannelClosed}, when any of the channels
      * is closed (done or in error).
      */