diff --git a/src/main/java/org/apache/commons/collections4/functors/UniquePredicate.java b/src/main/java/org/apache/commons/collections4/functors/UniquePredicate.java
index 2b3b07e40..a8b348914 100644
--- a/src/main/java/org/apache/commons/collections4/functors/UniquePredicate.java
+++ b/src/main/java/org/apache/commons/collections4/functors/UniquePredicate.java
@@ -26,6 +26,7 @@ import org.apache.commons.collections4.Predicate;
  * Predicate implementation that returns true the first time an object is
  * passed into the predicate.
  *
+ * @param <T> the type of the input to the predicate.
  * @since 3.0
  */
 public final class UniquePredicate<T> implements Predicate<T>, Serializable {