diff --git a/src/SFML/Network/Packet.cpp b/src/SFML/Network/Packet.cpp
index 5b668969f..740ca39f5 100644
--- a/src/SFML/Network/Packet.cpp
+++ b/src/SFML/Network/Packet.cpp
@@ -94,7 +94,7 @@ bool Packet::EndOfPacket() const
 ////////////////////////////////////////////////////////////
 Packet::operator void*() const
 {
-    return myIsValid ? this : NULL;
+    return myIsValid ? const_cast<Packet*>(this) : NULL;
 }