diff --git a/src/main/java/com/reandroid/lib/apk/JsonXmlInputSource.java b/src/main/java/com/reandroid/lib/apk/JsonXmlInputSource.java
index e7b76e9..8bb472a 100644
--- a/src/main/java/com/reandroid/lib/apk/JsonXmlInputSource.java
+++ b/src/main/java/com/reandroid/lib/apk/JsonXmlInputSource.java
@@ -53,7 +53,7 @@ public class JsonXmlInputSource extends InputSource {
             JSONObject jsonObject=new JSONObject(inputStream);
             resXmlBlock.fromJson(jsonObject);
         }catch (JSONException ex){
-            throw new IOException(inputSource.getAlias()+": "+ex.getMessage());
+            throw new IOException(inputSource.getAlias()+": "+ex.getMessage(), ex);
         }
         return resXmlBlock;
     }