diff --git a/src/brut/androlib/ApkDecoder.java b/src/brut/androlib/ApkDecoder.java
index 3f1f0388..168b6bdc 100644
--- a/src/brut/androlib/ApkDecoder.java
+++ b/src/brut/androlib/ApkDecoder.java
@@ -56,6 +56,11 @@ public class ApkDecoder {
 
     public void decode() throws AndrolibException {
         File outDir = getOutDir();
+
+        if (! mForceDelete && outDir.exists()) {
+            throw new OutDirExistsException();
+        }
+
         try {
             OS.rmdir(outDir);
         } catch (BrutException ex) {
@@ -116,6 +121,10 @@ public class ApkDecoder {
         mDebug = debug;
     }
 
+    public void setForceDelete(boolean forceDelete) {
+        mForceDelete = forceDelete;
+    }
+
     public ResTable getResTable() throws AndrolibException {
         if (mResTable == null) {
             mResTable = mAndrolib.getResTable(mApkFile);
@@ -147,4 +156,5 @@ public class ApkDecoder {
     private short mDecodeSources = DECODE_SOURCES_SMALI;
     private short mDecodeResources = DECODE_RESOURCES_FULL;
     private boolean mDebug = false;
+    private boolean mForceDelete = false;
 }
diff --git a/src/brut/androlib/OutDirExistsException.java b/src/brut/androlib/OutDirExistsException.java
new file mode 100644
index 00000000..ca9389e2
--- /dev/null
+++ b/src/brut/androlib/OutDirExistsException.java
@@ -0,0 +1,38 @@
+/*
+ *  Copyright 2010 Ryszard Wiśniewski <brut.alll@gmail.com>.
+ * 
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ * 
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *  under the License.
+ */
+package brut.androlib;
+
+/**
+ * @author Ryszard Wiśniewski <brut.alll@gmail.com>
+ */
+public class OutDirExistsException extends AndrolibException {
+
+    public OutDirExistsException(Throwable cause) {
+        super(cause);
+    }
+
+    public OutDirExistsException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public OutDirExistsException(String message) {
+        super(message);
+    }
+
+    public OutDirExistsException() {
+    }
+}