diff --git a/pom.xml b/pom.xml
index 9d9dd72..6c1b1e4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.findologic</groupId>
   <artifactId>xml-export</artifactId>
   <packaging>jar</packaging>
-  <version>1.1-SNAPSHOT</version>
+  <version>1.4.0-SNAPSHOT</version>
   <name>xml-export</name>
   <url>http://maven.apache.org</url>
   <dependencies>
diff --git a/src/main/resources/findologic.xsd b/src/main/resources/findologic.xsd
index 1aa9aa6..bb19d2c 100644
--- a/src/main/resources/findologic.xsd
+++ b/src/main/resources/findologic.xsd
@@ -46,7 +46,7 @@
             <xs:element type="bonusesType" name="bonuses" minOccurs="0" maxOccurs="1"/>
             <xs:element type="sortsType" name="sorts" minOccurs="0" maxOccurs="1"/>
         </xs:all>
-        <xs:attribute type="xs:string" name="id" use="required"/>
+        <xs:attribute type="nonEmptyString" name="id" use="required"/>
     </xs:complexType>
     
     <!-- Images -->