diff --git a/src/unix/gsocket.c b/src/unix/gsocket.c
index 541ab46929..2ffafc86b6 100644
--- a/src/unix/gsocket.c
+++ b/src/unix/gsocket.c
@@ -972,9 +972,9 @@ GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname)
   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
 
   /* If it is a numeric host name, convert it now */
-#if HAVE_INET_ATON
+#if defined(HAVE_INET_ATON)
   if (inet_aton(hostname, addr) == 0) {
-#elif HAVE_INET_ADDR
+#elif defined(HAVE_INET_ADDR)
   /* Fix from Guillermo Rodriguez Garcia <guille@iies.es> */
   if ( (addr->s_addr = inet_addr(hostname)) == -1 ) {
 #else