diff --git a/elfio/elfio.hpp b/elfio/elfio.hpp
index db605ab..8dfb558 100644
--- a/elfio/elfio.hpp
+++ b/elfio/elfio.hpp
@@ -76,6 +76,10 @@ class elfio
         create( ELFCLASS32, ELFDATA2LSB );
     }
 
+    //------------------------------------------------------------------------------
+    elfio( const elfio& ) = delete;
+    elfio& operator=( const elfio& ) = delete;
+
     //------------------------------------------------------------------------------
     ~elfio() { clean(); }