diff --git a/src/uniandes/tsdl/mutapk/MutAPK.java b/src/uniandes/tsdl/mutapk/MutAPK.java
index 87a97e1..aca7bb2 100644
--- a/src/uniandes/tsdl/mutapk/MutAPK.java
+++ b/src/uniandes/tsdl/mutapk/MutAPK.java
@@ -19,6 +19,7 @@
 import uniandes.tsdl.mutapk.detectors.MutationLocationDetector;
 import uniandes.tsdl.mutapk.detectors.MutationLocationListBuilder;
 import uniandes.tsdl.mutapk.helper.APKToolWrapper;
+import uniandes.tsdl.mutapk.helper.Helper;
 import uniandes.tsdl.mutapk.model.MutationType;
 import uniandes.tsdl.mutapk.model.location.MutationLocation;
 import uniandes.tsdl.mutapk.operators.OperatorBundle;
@@ -78,8 +79,10 @@ public static void runMutAPK(String[] args) throws Exception {
 		} else {
 			apkName = apkPath.substring(apkPath.lastIndexOf("/"));
 		}
+		Helper.getInstance();
+		Helper.setPackageName(appName);
 		// Decode the APK
-		APKToolWrapper.openAPK(apkPath, extraPath);
+		//APKToolWrapper.openAPK(apkPath, extraPath);
 
 		//Read selected operators
 		OperatorBundle operatorBundle = new OperatorBundle(operatorsDir);
diff --git a/src/uniandes/tsdl/mutapk/helper/APKToolWrapper.java b/src/uniandes/tsdl/mutapk/helper/APKToolWrapper.java
index 8bd2db2..8de3c95 100644
--- a/src/uniandes/tsdl/mutapk/helper/APKToolWrapper.java
+++ b/src/uniandes/tsdl/mutapk/helper/APKToolWrapper.java
@@ -34,15 +34,17 @@ public static void openAPK(String path, String extraPath) throws IOException, In
 		// System.out.println(decodedPath);
 	}
 
-	public static void buildAPK(String path, String extraPath, String appName, int mutantIndex) throws IOException, InterruptedException{
+	public static boolean buildAPK(String path, String extraPath, String appName, int mutantIndex) throws IOException, InterruptedException{
 		String decodedPath = Helper.getInstance().getCurrentDirectory();
 		Process ps = Runtime.getRuntime().exec(new String[]{"java","-jar",Paths.get(decodedPath,extraPath,"apktool.jar").toAbsolutePath().toString(),"b",Paths.get(decodedPath,path,"src").toAbsolutePath().toString(),"-o",Paths.get(decodedPath,path,appName).toAbsolutePath().toString(),"-f"});
 		System.out.println("Building mutant "+mutantIndex+"...");
 		ps.waitFor();
 		if(Files.exists(Paths.get(decodedPath,path,appName).toAbsolutePath())) {
-			System.out.println("SUCCESS: The "+mutantIndex+" mutant APK has been generated.");			
+			System.out.println("SUCCESS: The "+mutantIndex+" mutant APK has been generated.");
+			return true;
 		} else {
 			System.out.println("ERROR: The "+mutantIndex+" mutant APK has not been generated.");
+			return false;
 		}
 		//				InputStream es = ps.getErrorStream();
 		//				byte e[] = new byte[es.available()];
diff --git a/src/uniandes/tsdl/mutapk/helper/Helper.java b/src/uniandes/tsdl/mutapk/helper/Helper.java
index 9dd23c5..cd6335b 100644
--- a/src/uniandes/tsdl/mutapk/helper/Helper.java
+++ b/src/uniandes/tsdl/mutapk/helper/Helper.java
@@ -25,6 +25,7 @@ public class Helper {
 	public static String currDirectory = "";
 	public static List<String> actNames = new ArrayList<String>();
 	public static String mainActivity = "";
+	public static String packageName = "";
 	public final static String MANIFEST = "AndroidManifest.xml";
 	public final static String MAIN_ACTION = "android.intent.action.MAIN";
 	public static final int MIN_VERSION = 2;
@@ -41,6 +42,20 @@ public static Helper getInstance() {
 		}
 		return instance;
 	}
+	
+	
+
+	public static String getPackageName() {
+		return packageName;
+	}
+
+
+
+	public static void setPackageName(String packageName) {
+		Helper.packageName = packageName;
+	}
+
+
 
 //	public String getCurrentDirectory() throws UnsupportedEncodingException {
 //		if (currDirectory.equals("")) {
diff --git a/src/uniandes/tsdl/mutapk/operators/activity/DifferentActivityIntentDefinition.java b/src/uniandes/tsdl/mutapk/operators/activity/DifferentActivityIntentDefinition.java
index 2e5d3aa..a92eeca 100644
--- a/src/uniandes/tsdl/mutapk/operators/activity/DifferentActivityIntentDefinition.java
+++ b/src/uniandes/tsdl/mutapk/operators/activity/DifferentActivityIntentDefinition.java
@@ -39,9 +39,19 @@ public boolean performMutation(MutationLocation location, BufferedWriter writer,
 				founded =true;
 				realLine = temp.getLine();
 				toMutate = hijoss.get(2).getText();
-				mutatedString = "L"+activities.get((int)Math.random()*activities.size()).replace(".", "/")+";";
+				String activityName =activities.get((int)(Math.random()*activities.size()));
+				if(!activityName.startsWith(Helper.getPackageName())) {
+					activityName=Helper.getPackageName()+"."+((activityName.startsWith("."))?activityName.substring(1):activityName);
+				}
+				activityName = activityName.replace(".", "/");
+				mutatedString = "L"+activityName+";";
 				while(mutatedString.equals(toMutate)){
-					mutatedString = "L"+activities.get((int)Math.random()*activities.size()).replace(".", "/")+";";
+					activityName =activities.get((int)(Math.random()*activities.size()));
+					if(!activityName.startsWith(Helper.getPackageName())) {
+						activityName=Helper.getPackageName()+"."+((activityName.startsWith("."))?activityName.substring(1):activityName);
+					}
+					activityName = activityName.replace(".", "/");
+					mutatedString = "L"+activityName+";";
 				}
 			}
 		}
diff --git a/src/uniandes/tsdl/mutapk/processors/MutationsProcessor.java b/src/uniandes/tsdl/mutapk/processors/MutationsProcessor.java
index 26e25f3..15ece32 100644
--- a/src/uniandes/tsdl/mutapk/processors/MutationsProcessor.java
+++ b/src/uniandes/tsdl/mutapk/processors/MutationsProcessor.java
@@ -141,13 +141,13 @@ public String call() {
 						// Perform mutation
 						operator.performMutation(mutationLocation, writer, currentMutationIndex);
 						Long mutationEnd = System.currentTimeMillis();
-						APKToolWrapper.buildAPK(mutantRootFolder, extraPath, apkName, currentMutationIndex);
+						boolean result = APKToolWrapper.buildAPK(mutantRootFolder, extraPath, apkName, currentMutationIndex);
 						File mutatedFile = new File(newMutationPath);
 						String fileName = (new File(newMutationPath)).getName();
 						File mutantRootFolderDir = new File(mutantRootFolder+fileName);
 						FileUtils.copyFile(mutatedFile, mutantRootFolderDir);
 						File srcFolder = new File(mutantFolder);
-						FileUtils.deleteDirectory(srcFolder);
+						if(result) {FileUtils.deleteDirectory(srcFolder);}
 						Long buildEnd = System.currentTimeMillis();
 						Long mutationTime = mutationEnd-mutationIni;
 						Long buildingTime = buildEnd - mutationEnd;
diff --git a/test/MutAPK-0.0.1.jar b/test/MutAPK-0.0.1.jar
index 07cd168..264dabd 100644
Binary files a/test/MutAPK-0.0.1.jar and b/test/MutAPK-0.0.1.jar differ
diff --git a/test/operators.properties b/test/operators.properties
index c3a4606..2ddf1e0 100644
--- a/test/operators.properties
+++ b/test/operators.properties
@@ -1,3 +1,4 @@
 # 30	=	BuggyGUIListener
-15	=	BluetoothAdapterAlwaysEnabled
-31	=	InvalidIDFindView
\ No newline at end of file
+# 15	=	BluetoothAdapterAlwaysEnabled
+# 31	=	InvalidIDFindView
+2	=	DifferentActivityIntentDefinition
\ No newline at end of file