diff --git a/io/las/LasReader.hpp b/io/las/LasReader.hpp
index 57efbaeaac..4ab4e62dd0 100644
--- a/io/las/LasReader.hpp
+++ b/io/las/LasReader.hpp
@@ -88,7 +88,7 @@ class PDAL_DLL LasReader : public pdal::Reader
         return m_istream;
     }
     virtual void destroyStream()
-        { FileUtils::closeFile(m_istream); m_istream = NULL; }
+        { FileUtils::closeFile(m_istream); m_istream = NULL; m_initialized = false; }
 private:
     LasError m_error;
     LasHeader m_lasHeader;