diff --git a/core/src/main/resources/template/simple/optgroup.ftl b/core/src/main/resources/template/simple/optgroup.ftl
index 8f704f244..c2a15a3c2 100644
--- a/core/src/main/resources/template/simple/optgroup.ftl
+++ b/core/src/main/resources/template/simple/optgroup.ftl
@@ -39,7 +39,7 @@
 	<#assign tmpValue=stack.findValue(optGroupInternalListUiBean.parameters.listValue) />
 	<#assign tmpKeyStr = tmpKey.toString() />
 	<option value="${tmpKeyStr?html}"
-	<#if tag.contains(parameters.nameValue, tmpKeyStr) == true>
+	<#if tag.contains(parameters.nameValue, tmpKey) == true>
 	selected="selected"
 	</#if>
 	>${tmpValue?html}
diff --git a/core/src/test/java/org/apache/struts2/views/jsp/ui/OptGroupTest.java b/core/src/test/java/org/apache/struts2/views/jsp/ui/OptGroupTest.java
index bee7ade70..308abca46 100644
--- a/core/src/test/java/org/apache/struts2/views/jsp/ui/OptGroupTest.java
+++ b/core/src/test/java/org/apache/struts2/views/jsp/ui/OptGroupTest.java
@@ -121,6 +121,37 @@ public class OptGroupTest extends AbstractUITagTest {
         verify(SelectTag.class.getResource("OptGroup-3.txt"));
     }
     
+    public void testOptGroupWithMultipleSelectIntKey() throws Exception {
+      SelectTag selectTag = new SelectTag();
+      selectTag.setMultiple("true");
+      selectTag.setName("mySelection");
+      selectTag.setLabel("My Selection");
+      selectTag.setList("%{#{1:'one',2:'two',3:'three'}}");
+      selectTag.setValue("%{{22,12,2}}");
+
+      OptGroupTag optGroupTag1 = new OptGroupTag();
+      optGroupTag1.setLabel("My Label 1");
+      optGroupTag1.setList("%{#{11:'aaa',12:'bbb',13:'ccc'}}");
+
+      OptGroupTag optGroupTag2 = new OptGroupTag();
+      optGroupTag2.setLabel("My Label 2");
+      optGroupTag2.setList("%{#{21:'ddd',22:'eee',23:'fff'}}");
+
+      selectTag.setPageContext(pageContext);
+      selectTag.doStartTag();
+      optGroupTag1.setPageContext(pageContext);
+      optGroupTag1.doStartTag();
+      optGroupTag1.doEndTag();
+      optGroupTag2.setPageContext(pageContext);
+      optGroupTag2.doStartTag();
+      optGroupTag2.doEndTag();
+      selectTag.doEndTag();
+
+
+      //System.out.println(writer.toString());
+      verify(SelectTag.class.getResource("OptGroup-7.txt"));
+  }
+    
     public void testOptGroupNumbers() throws Exception {
     	
     	((TestAction)action).setMap(new LinkedHashMap() {{
diff --git a/core/src/test/resources/org/apache/struts2/views/jsp/ui/OptGroup-7.txt b/core/src/test/resources/org/apache/struts2/views/jsp/ui/OptGroup-7.txt
new file mode 100644
index 000000000..9a3172735
--- /dev/null
+++ b/core/src/test/resources/org/apache/struts2/views/jsp/ui/OptGroup-7.txt
@@ -0,0 +1,43 @@
+<tr>
+    <td class="tdLabel"><label for="mySelection" class="label">My Selection:</label></td>
+    <td>
+<select name="mySelection" id="mySelection" multiple="multiple">
+    <option value="1">one</option>
+    <option value="2" selected="selected">two</option>
+    <option value="3">three</option>
+
+<optgroup 
+	label="My Label 1"
+>
+
+	<option value="11"
+	>aaa
+	</option>
+	<option value="12"
+	selected="selected"
+	>bbb
+	</option>
+	<option value="13"
+	>ccc
+	</option>
+</optgroup>
+<optgroup 
+	label="My Label 2"
+>
+
+	<option value="21"
+	>ddd
+	</option>
+	<option value="22"
+	selected="selected"
+	>eee
+	</option>
+	<option value="23"
+	>fff
+	</option>
+</optgroup>
+
+</select>
+<input type="hidden" id="__multiselect_mySelection" name="__multiselect_mySelection" value=""/>
+</td>
+</tr>
\ No newline at end of file