diff --git a/lib/multi.c b/lib/multi.c
index 0dd6994324337da33bafcc5a6c16ce44bda7730d..c15c2026af372785514103f20c4319dd777f1b81 100644
--- a/lib/multi.c
+++ b/lib/multi.c
@@ -25,6 +25,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
 #ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif
diff --git a/lib/ssluse.c b/lib/ssluse.c
index 64465deb1e2d84229de8983f15930603c0f6e8ad..cee6ee0f5b974b2000acae255440fcc721b319e4 100644
--- a/lib/ssluse.c
+++ b/lib/ssluse.c
@@ -30,6 +30,9 @@
 
 #include <string.h>
 #include <stdlib.h>
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
 #ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif