diff --git a/include/tins/packet_sender.h b/include/tins/packet_sender.h
index ab151ac..97c5998 100644
--- a/include/tins/packet_sender.h
+++ b/include/tins/packet_sender.h
@@ -176,14 +176,14 @@ namespace Tins {
          */
         ~PacketSender();
 
-        #if !defined(WIN32) || HAVE_PACKET_SENDER_PCAP_SENDPACKET
+        #if !defined(WIN32) || defined(HAVE_PACKET_SENDER_PCAP_SENDPACKET)
         /** 
          * \brief Opens a layer 2 socket.
          * 
          * If this operation fails, then a socket_open_error will be thrown.
          */
         void open_l2_socket(const NetworkInterface& iface = NetworkInterface());
-        #endif // !WIN32 || HAVE_PACKET_SENDER_PCAP_SENDPACKET
+        #endif // !WIN32 || defined(HAVE_PACKET_SENDER_PCAP_SENDPACKET)
 
         /** 
          * \brief Opens a layer 3 socket, using the corresponding protocol