diff --git a/jdk/src/java.base/share/classes/java/util/Locale.java b/jdk/src/java.base/share/classes/java/util/Locale.java
index 23417394030..6567ab02bb4 100644
--- a/jdk/src/java.base/share/classes/java/util/Locale.java
+++ b/jdk/src/java.base/share/classes/java/util/Locale.java
@@ -2858,6 +2858,8 @@ public final class Locale implements Cloneable, Serializable {
          * @param range a language range
          * @throws NullPointerException if the given {@code range} is
          *     {@code null}
+         * @throws IllegalArgumentException if the given {@code range} does not
+         * comply with the syntax of the language range mentioned in RFC 4647
          */
         public LanguageRange(String range) {
             this(range, MAX_WEIGHT);
@@ -2873,8 +2875,10 @@ public final class Locale implements Cloneable, Serializable {
          *     {@code MAX_WEIGHT}
          * @throws NullPointerException if the given {@code range} is
          *     {@code null}
-         * @throws IllegalArgumentException if the given {@code weight} is less
-         *     than {@code MIN_WEIGHT} or greater than {@code MAX_WEIGHT}
+         * @throws IllegalArgumentException if the given {@code range} does not
+         * comply with the syntax of the language range mentioned in RFC 4647
+         * or if the given {@code weight} is less than {@code MIN_WEIGHT}
+         * or greater than {@code MAX_WEIGHT}
          */
         public LanguageRange(String range, double weight) {
             if (range == null) {