diff --git a/src/lp/packet.cpp b/src/lp/packet.cpp
index c839666..8d62ed9 100644
--- a/src/lp/packet.cpp
+++ b/src/lp/packet.cpp
@@ -63,7 +63,7 @@
 template size_t
 Packet::wireEncode<encoding::EstimatorTag>(EncodingImpl<encoding::EstimatorTag>& encoder) const;
 
-const Block
+Block
 Packet::wireEncode() const
 {
   if (m_wire.hasWire()) {
diff --git a/src/lp/packet.hpp b/src/lp/packet.hpp
index aa77a4f..bc35122 100644
--- a/src/lp/packet.hpp
+++ b/src/lp/packet.hpp
@@ -55,7 +55,7 @@
   /**
    * \brief encode packet into wire format
    */
-  const Block
+  Block
   wireEncode() const;
 
   /**