diff --git a/jdk/src/share/classes/javax/crypto/spec/PBEParameterSpec.java b/jdk/src/share/classes/javax/crypto/spec/PBEParameterSpec.java
index 8ea186e6b1e..4a17c40d0e0 100644
--- a/jdk/src/share/classes/javax/crypto/spec/PBEParameterSpec.java
+++ b/jdk/src/share/classes/javax/crypto/spec/PBEParameterSpec.java
@@ -64,7 +64,8 @@ public class PBEParameterSpec implements AlgorithmParameterSpec {
      * @param salt the salt. The contents of <code>salt</code> are copied
      * to protect against subsequent modification.
      * @param iterationCount the iteration count.
-     * @param paramSpec the cipher algorithm parameter specification.
+     * @param paramSpec the cipher algorithm parameter specification, which
+     * may be null.
      * @exception NullPointerException if <code>salt</code> is null.
      *
      * @since 1.8