diff --git a/examples/servicebased.trapezoid/pom.xml b/examples/servicebased.trapezoid/pom.xml
index b52b91b..09b5fa7 100644
--- a/examples/servicebased.trapezoid/pom.xml
+++ b/examples/servicebased.trapezoid/pom.xml
@@ -16,7 +16,7 @@
  specific language governing permissions and limitations
  under the License.
 -->
-<project>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 
   <parent>
     <groupId>org.apache</groupId>
@@ -57,6 +57,14 @@
           </instructions>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <source>1.5</source>
+          <target>1.5</target>
+        </configuration>
+      </plugin>
     </plugins>
   </build>
 </project>