diff --git a/tools/scripts/android_rules.xml b/tools/scripts/android_rules.xml
index 1f5daac83..be532643e 100644
--- a/tools/scripts/android_rules.xml
+++ b/tools/scripts/android_rules.xml
@@ -201,7 +201,15 @@
     </target>
 
     <!-- Uinstall the package from the default emulator -->
-    <target name="uninstall">
+    <target name="uninstall.check">
+        <condition property="uninstall.run">
+           <isset property="application-package" />
+        </condition>
+    </target>
+    <target name="uninstall.error" depends="uninstall.check" unless="uninstall.run">
+        <echo>Unable to run 'ant unintall', application-package is not defined in build.properties</echo>
+    </target>
+    <target name="uninstall" depends="uninstall.error" if="uninstall.run">
         <echo>Uninstalling ${application-package} from the default emulator...</echo>
         <exec executable="${adb}" failonerror="true">
             <arg value="uninstall" />
diff --git a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/project/ProjectCreator.java b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/project/ProjectCreator.java
index 1e16a8365..916fa7c40 100644
--- a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/project/ProjectCreator.java
+++ b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/project/ProjectCreator.java
@@ -199,9 +199,10 @@ public class ProjectCreator {
             defaultProperties.setAndroidTarget(target);
             defaultProperties.save();
 
-            // create an empty build.properties
+            // create a build.properties file with just the application package
             ProjectProperties buildProperties = ProjectProperties.create(folderPath,
                     PropertyType.BUILD);
+            buildProperties.setProperty(ProjectProperties.PROPERTY_APP_PACKAGE, packageName);
             buildProperties.save();
 
             // create the map for place-holders of values to replace in the templates
diff --git a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/project/ProjectProperties.java b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/project/ProjectProperties.java
index 33f88372a..d71491c72 100644
--- a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/project/ProjectProperties.java
+++ b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/project/ProjectProperties.java
@@ -22,7 +22,6 @@ import com.android.sdklib.SdkManager;
 
 import java.io.File;
 import java.io.FileOutputStream;
-import java.io.FileWriter;
 import java.io.IOException;
 import java.io.OutputStreamWriter;
 import java.util.HashMap;
@@ -38,6 +37,7 @@ public final class ProjectProperties {
     public final static String PROPERTY_TARGET = "target";
     public final static String PROPERTY_APK_CONFIGS = "apk-configurations";
     public final static String PROPERTY_SDK = "sdk-location";
+    public final static String PROPERTY_APP_PACKAGE = "application-package";
 
     public static enum PropertyType {
         BUILD("build.properties", BUILD_HEADER),
@@ -85,15 +85,9 @@ public final class ProjectProperties {
            "# This file must be checked in Version Control Systems, as it is\n" +
            "# integral to the build system of your project.\n" +
            "\n" +
-           "# The name of your application package as defined in the manifest.\n" +
-           "# Used by the 'uninstall' rule.\n"+
-           "#application-package=com.example.myproject\n" +
-           "\n" +
-           "# The name of the source folder.\n" +
-           "#source-folder=src\n" +
-           "\n" +
-           "# The name of the output folder.\n" +
-           "#out-folder=bin\n" +
+           "# You can use this to override default values such as\n" +
+           "#  'source-folder' for the location of your java source folder and\n" +
+           "#  'out-folder' for the location of your output folder.\n" +
            "\n";
 
     private final static Map<String, String> COMMENT_MAP = new HashMap<String, String>();
@@ -116,6 +110,9 @@ public final class ProjectProperties {
                 "# location of the SDK. This is only used by Ant\n" +
                 "# For customization when using a Version Control System, please read the\n" +
                 "# header note.\n");
+        COMMENT_MAP.put(PROPERTY_APP_PACKAGE,
+                "# The name of your application package as defined in the manifest.\n" +
+                "# Used by the 'uninstall' rule.\n");
     }
 
     private final String mProjectFolderOsPath;