diff --git a/brut.apktool/apktool-lib/src/main/java/brut/androlib/Androlib.java b/brut.apktool/apktool-lib/src/main/java/brut/androlib/Androlib.java
index 35852f30..7240554c 100644
--- a/brut.apktool/apktool-lib/src/main/java/brut/androlib/Androlib.java
+++ b/brut.apktool/apktool-lib/src/main/java/brut/androlib/Androlib.java
@@ -41,6 +41,8 @@ import java.util.zip.ZipFile;
 import java.util.zip.ZipOutputStream;
 
 import org.apache.commons.io.FileUtils;
+import org.apache.commons.io.FilenameUtils;
+import org.apache.commons.lang3.StringUtils;
 
 /**
  * @author Ryszard Wiśniewski <brut.alll@gmail.com>
@@ -159,15 +161,28 @@ public class Androlib {
         }
     }
 
-    public void recordUncompressedFiles(ExtFile apkFile, Collection<String> uncompressedFiles) throws AndrolibException {
+    public void recordUncompressedFiles(ExtFile apkFile, Collection<String> uncompressedFilesOrExts) throws AndrolibException {
         try {
             Directory unk = apkFile.getDirectory();
             Set<String> files = unk.getFiles(true);
+            String ext;
 
             for (String file : files) {
                 if (isAPKFileNames(file) && !NO_COMPRESS_PATTERN.matcher(file).find()) {
-                    if (unk.getCompressionLevel(file) == 0 && !uncompressedFiles.contains(file)) {
-                        uncompressedFiles.add(file);
+                    if (unk.getCompressionLevel(file) == 0) {
+
+                        if (StringUtils.countMatches(file, ".") > 1) {
+                            ext = file;
+                        } else {
+                            ext = FilenameUtils.getExtension(file);
+                            if (ext.isEmpty()) {
+                                ext = file;
+                            }
+                        }
+
+                        if (! uncompressedFilesOrExts.contains(ext)) {
+                            uncompressedFilesOrExts.add(ext);
+                        }
                     }
                 }
             }