diff --git a/common/rdr/ZlibInStream.h b/common/rdr/ZlibInStream.h
index c26b6d6..6bd4da4 100644
--- a/common/rdr/ZlibInStream.h
+++ b/common/rdr/ZlibInStream.h
@@ -38,11 +38,15 @@
     virtual ~ZlibInStream();
 
     void setUnderlying(InStream* is, int bytesIn);
-    void reset();
+    void removeUnderlying();
     int pos();
+    void reset();
 
   private:
 
+    void init();
+    void deinit();
+
     int overrun(int itemSize, int nItems, bool wait);
     bool decompress(bool wait);