diff --git a/core/pom.xml b/core/pom.xml
index 029bc17..3a4c865 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -14,6 +14,15 @@
   </dependencies>
 
   <build>
+    <plugins>
+      <plugin>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <source>1.5</source>
+          <target>1.5</target>
+        </configuration>
+      </plugin>
+    </plugins>
     <resources>
       <resource>
         <directory>src/main/java</directory>
diff --git a/web-app/pom.xml b/web-app/pom.xml
index a3dfc6c..ed06468 100644
--- a/web-app/pom.xml
+++ b/web-app/pom.xml
@@ -22,7 +22,6 @@
     <plugins>
       <plugin>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.1</version>
         <configuration>
           <source>1.5</source>
           <target>1.5</target>
diff --git a/web-app/web/pom.xml b/web-app/web/pom.xml
index 5c759de..779ace4 100644
--- a/web-app/web/pom.xml
+++ b/web-app/web/pom.xml
@@ -64,6 +64,13 @@
         </configuration>
       </plugin>
 
+      <plugin>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <source>1.5</source>
+          <target>1.5</target>
+        </configuration>
+      </plugin>
     </plugins>
   </build>