diff --git a/ear/plugin.jelly b/ear/plugin.jelly
index 733adf35..8e9c471e 100644
--- a/ear/plugin.jelly
+++ b/ear/plugin.jelly
@@ -79,6 +79,11 @@
            We know that this dep "wants" to be bundled.
           -->
                     
+          <util:file name="${lib.file.parent}/${lib.file.name}" var="checkFile" />
+          <j:if test="${!(checkFile.getAbsolutePath().equals(checkFile.getCanonicalPath()))}">
+             <ant:fail>Case-sensitive issue: The dependency ${dep.id} has a case problem.  The dependency was either retrieved in the past with the wrong case or has been specified with the wrong case in your project.xml file.  Fix your project.xml or update your local repository with the properly-cased file and try again.</ant:fail>
+          </j:if>
+
           <ant:echo>Bundling: ${dep.type} - ${dep.id} - ${dep.version}</ant:echo>
           <ant:fileset dir="${lib.file.parent}">
             <ant:include name="${lib.file.name}"/>
diff --git a/ear/xdocs/changes.xml b/ear/xdocs/changes.xml
index 3c80b33e..0e23c1b2 100644
--- a/ear/xdocs/changes.xml
+++ b/ear/xdocs/changes.xml
@@ -25,6 +25,7 @@
   </properties>
   <body>
     <release version="1.6-SNAPSHOT" date="in CVS">
+      <action dev="felipeal" type="fix" issue="MPEAR-9" due-to="Sean Timm">Build now fails in some cases were the dependencies are copied with wrong case.</action>
       <action dev="felipeal" type="add" issue="MPEAR-21">Added property <code>maven.ear.appxml.encoding</code>.</action>
       <action dev="vmassol" type="update" issue="MPEAR-19">
         The plugin now displays the version of the bundled artifacts on the 
