diff --git a/test/smtp-dummy.c b/test/smtp-dummy.c
index 3801a5e0..86d43162 100644
--- a/test/smtp-dummy.c
+++ b/test/smtp-dummy.c
@@ -37,7 +37,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
-#include <netinet/ip.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
 #include <netdb.h>
 #include <unistd.h>