diff --git a/extensions/openpower-pels/stream.hpp b/extensions/openpower-pels/stream.hpp
index c19b387..014cc3d 100644
--- a/extensions/openpower-pels/stream.hpp
+++ b/extensions/openpower-pels/stream.hpp
@@ -52,9 +52,9 @@
     Stream() = delete;
     ~Stream() = default;
     Stream(const Stream&) = default;
-    Stream& operator=(const Stream&) = default;
-    Stream(Stream&&) = default;
-    Stream& operator=(Stream&&) = default;
+    Stream& operator=(const Stream&) = delete;
+    Stream(Stream&&) = delete;
+    Stream& operator=(Stream&&) = delete;
 
     /**
      * @brief Constructor