diff --git a/brut.apktool/apktool-lib/src/main/java/brut/androlib/ApkDecoder.java b/brut.apktool/apktool-lib/src/main/java/brut/androlib/ApkDecoder.java
index d90f60b63b..1f328fbefc 100644
--- a/brut.apktool/apktool-lib/src/main/java/brut/androlib/ApkDecoder.java
+++ b/brut.apktool/apktool-lib/src/main/java/brut/androlib/ApkDecoder.java
@@ -275,6 +275,10 @@ private void copyRawFiles(File outDir) throws AndrolibException {
 
     private boolean isAPKFileNames(String file) {
         for (String apkFile : APK_STANDARD_ALL_FILENAMES) {
+            if (file.startsWith("classes") && file.endsWith(".dex")) {
+                return true;
+            }
+
             if (apkFile.equals(file) || file.startsWith(apkFile + "/")) {
                 return true;
             }