diff --git a/src/brut/androlib/res/AndrolibResources.java b/src/brut/androlib/res/AndrolibResources.java
index 187ef3ff..d7114d4e 100644
--- a/src/brut/androlib/res/AndrolibResources.java
+++ b/src/brut/androlib/res/AndrolibResources.java
@@ -212,7 +212,9 @@ final public class AndrolibResources {
             serial.startTag(null, "resources");
 
             for (ResResource res : valuesFile.listResources()) {
-
+                if (valuesFile.isSynthesized(res)) {
+                    continue;
+                }
                 ((ResXmlSerializable) res.getValue())
                     .serializeToXml(serial, res);
             }
diff --git a/src/brut/androlib/res/data/ResPackage.java b/src/brut/androlib/res/data/ResPackage.java
index f2d10081..810880c5 100644
--- a/src/brut/androlib/res/data/ResPackage.java
+++ b/src/brut/androlib/res/data/ResPackage.java
@@ -42,6 +42,7 @@ public class ResPackage {
     private final Set<ResResource> mFiles = new LinkedHashSet<ResResource>();
     private final Map<Duo<ResType, ResConfig>, ResValuesFile> mValuesFiles =
         new LinkedHashMap<Duo<ResType, ResConfig>, ResValuesFile>();
+    private final Set<ResID> mSynthesizedRes = new HashSet<ResID>();
 
     private ResValueFactory mValueFactory;
 
@@ -119,6 +120,10 @@ public class ResPackage {
         return mName;
     }
 
+    boolean isSynthesized(ResID resId) {
+        return mSynthesizedRes.contains(resId);
+    }
+
     public void addResSpec(ResResSpec spec) throws AndrolibException {
         if (mResSpecs.put(spec.getId(), spec) != null) {
             throw new AndrolibException("Multiple resource specs: " + spec);
@@ -149,13 +154,17 @@ public class ResPackage {
                 new Duo<ResType, ResConfig>(type, config);
             ResValuesFile values = mValuesFiles.get(key);
             if (values == null) {
-                values = new ResValuesFile(type, config);
+                values = new ResValuesFile(this, type, config);
                 mValuesFiles.put(key, values);
             }
             values.addResource(res);
         }
     }
 
+    public void addSynthesizedRes(int resId) {
+        mSynthesizedRes.add(new ResID(resId));
+    }
+
     @Override
     public String toString() {
         return mName;
diff --git a/src/brut/androlib/res/data/ResValuesFile.java b/src/brut/androlib/res/data/ResValuesFile.java
index 85c5699c..246c7f15 100644
--- a/src/brut/androlib/res/data/ResValuesFile.java
+++ b/src/brut/androlib/res/data/ResValuesFile.java
@@ -24,12 +24,14 @@ import java.util.Set;
  * @author Ryszard Wiśniewski <brut.alll@gmail.com>
  */
 public class ResValuesFile {
+    private final ResPackage mPackage;
     private final ResType mType;
     private final ResConfig mConfig;
     private final Set<ResResource> mResources =
         new LinkedHashSet<ResResource>();
 
-    public ResValuesFile(ResType type, ResConfig config) {
+    public ResValuesFile(ResPackage pkg, ResType type, ResConfig config) {
+        this.mPackage = pkg;
         this.mType = type;
         this.mConfig = config;
     }
@@ -53,6 +55,10 @@ public class ResValuesFile {
         return mConfig;
     }
 
+    public boolean isSynthesized(ResResource res) {
+        return mPackage.isSynthesized(res.getResSpec().getId());
+    }
+
     public void addResource(ResResource res) {
         mResources.add(res);
     }