diff --git a/AssetStudio/BundleFile.cs b/AssetStudio/BundleFile.cs
index a48fec4..c5385bb 100644
--- a/AssetStudio/BundleFile.cs
+++ b/AssetStudio/BundleFile.cs
@@ -231,7 +231,9 @@ namespace AssetStudio
                     }
                 case 1: //LZMA
                     {
-                        blocksInfoUncompresseddStream = SevenZipHelper.StreamDecompress(blocksInfoCompressedStream);
+                        blocksInfoUncompresseddStream = new MemoryStream((int)(m_Header.uncompressedBlocksInfoSize));
+                        SevenZipHelper.StreamDecompress(blocksInfoCompressedStream, blocksInfoUncompresseddStream, m_Header.compressedBlocksInfoSize, m_Header.uncompressedBlocksInfoSize);
+                        blocksInfoUncompresseddStream.Position = 0;
                         blocksInfoCompressedStream.Close();
                         break;
                     }
diff --git a/AssetStudio/SevenZipHelper.cs b/AssetStudio/SevenZipHelper.cs
index c91b096..b06edd3 100644
--- a/AssetStudio/SevenZipHelper.cs
+++ b/AssetStudio/SevenZipHelper.cs
@@ -34,15 +34,16 @@ namespace AssetStudio
             return newOutStream;
         }
 
-        public static void StreamDecompress(Stream inStream, Stream outStream, long inSize, long outSize)
+        public static void StreamDecompress(Stream compressedStream, Stream decompressedStream, long compressedSize, long decompressedSize)
         {
+            var basePosition = compressedStream.Position;
             var decoder = new Decoder();
             var properties = new byte[5];
-            if (inStream.Read(properties, 0, 5) != 5)
+            if (compressedStream.Read(properties, 0, 5) != 5)
                 throw new Exception("input .lzma is too short");
             decoder.SetDecoderProperties(properties);
-            inSize -= 5L;
-            decoder.Code(inStream, outStream, inSize, outSize, null);
+            decoder.Code(compressedStream, decompressedStream, compressedSize - 5, decompressedSize, null);
+            compressedStream.Position = basePosition + compressedSize;
         }
     }
 }