diff --git a/tools/scripts/android_rules.xml b/tools/scripts/android_rules.xml
index 4d41cae3c..4a98700e7 100644
--- a/tools/scripts/android_rules.xml
+++ b/tools/scripts/android_rules.xml
@@ -252,7 +252,6 @@
         </exec>
     </target>
 
-    <!-- Uninstalls the package from the default emulator/device -->
     <target name="-uninstall-check">
         <condition property="uninstall.run">
            <isset property="application.package" />
@@ -263,6 +262,7 @@
         <echo>Unable to run 'ant uninstall', application.package is not defined in build.properties</echo>
     </target>
 
+    <!-- Uninstalls the package from the default emulator/device -->
     <target name="uninstall" depends="-uninstall-error" if="uninstall.run" description="Uninstalls the application from a running emulator or device.">
         <echo>Uninstalling ${application.package} from the default emulator or device...</echo>
         <exec executable="${adb}" failonerror="true">
@@ -271,17 +271,23 @@
         </exec>
     </target>
 
+    <target name="clean" description="Removes output files created by other targets.">
+        <delete dir="${out.dir}" />
+        <delete dir="${gen.dir}" />
+    </target>
+
     <target name="help">
         <!-- displays starts at col 13
               |13                                                              80| -->
         <echo>Android Ant Build. Available targets:</echo>
         <echo>   help:      Displays this help.</echo>
+        <echo>   clean:     Removes output files created by other targets.</echo>
         <echo>   compile:   Compiles project's .java files into .class files.</echo>
         <echo>   debug:     Builds the application and signs it with a debug key.</echo>
         <echo>   release:   Builds the application. The generated apk file must be</echo>
         <echo>              signed before it is published.</echo>
         <echo>   install:   Installs the debug package onto a running emulator or</echo>
-        <echo>              device. This can only be used if the application has </echo>
+        <echo>              device. This can only be used if the application has</echo>
         <echo>              not yet been installed.</echo>
         <echo>   reinstall: Installs the debug package on a running emulator or</echo>
         <echo>              device that already has the application.</echo>