diff --git a/protocol.c b/protocol.c
index 244e4d3..2a249d8 100644
--- a/protocol.c
+++ b/protocol.c
@@ -206,7 +206,7 @@ enet_protocol_remove_sent_reliable_command (ENetPeer * peer, enet_uint16 reliabl
        }
     }
 
-    commandNumber = outgoingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_MASK;
+    commandNumber = (ENetProtocolCommand) (outgoingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_MASK);
     
     enet_list_remove (& outgoingCommand -> outgoingCommandList);