diff --git a/src/java/org/apache/commons/lang/text/ExtendedMessageFormat.java b/src/java/org/apache/commons/lang/text/ExtendedMessageFormat.java
index 1bec4c586..4bd76dcff 100644
--- a/src/java/org/apache/commons/lang/text/ExtendedMessageFormat.java
+++ b/src/java/org/apache/commons/lang/text/ExtendedMessageFormat.java
@@ -106,10 +106,10 @@ public ExtendedMessageFormat(String pattern, Locale locale) {
      * Create a new ExtendedMessageFormat for the default locale.
      * 
      * @param pattern String
-     * @param registry Registry of format factories:  Map<String, FormatFactory>
+     * @param registry Registry of format factories:  Map<String, ? extends FormatFactory>
      * @throws IllegalArgumentException in case of a bad pattern.
      */
-    public ExtendedMessageFormat(String pattern, Map<String, FormatFactory> registry) {
+    public ExtendedMessageFormat(String pattern, Map<String, ? extends FormatFactory> registry) {
         this(pattern, Locale.getDefault(), registry);
     }
 
@@ -118,7 +118,7 @@ public ExtendedMessageFormat(String pattern, Map<String, FormatFactory> registry
      * 
      * @param pattern String
      * @param locale Locale
-     * @param registry Registry of format factories:  Map<String, FormatFactory>
+     * @param registry Registry of format factories:  Map<String, ? extends FormatFactory>
      * @throws IllegalArgumentException in case of a bad pattern.
      */
     public ExtendedMessageFormat(String pattern, Locale locale, Map<String, ? extends FormatFactory> registry) {