diff --git a/net.c b/net.c
index 18ee309922ff3a988e0aff3b7d977134f01307a8..1efa81088eabde90b9e33b7734c6f26ed5a270a5 100644
--- a/net.c
+++ b/net.c
@@ -29,6 +29,9 @@
 #include <sys/time.h>
 #include <zlib.h>
 
+/* Needed early for _BSD etc. */
+#include "config-host.h"
+
 #ifndef _WIN32
 #include <sys/times.h>
 #include <sys/wait.h>
diff --git a/osdep.c b/osdep.c
index 04e98f0b297fe597c70718d5f0a121d26e860533..ff5f17a6bdce7015a56b3ee47694e0910bf42049 100644
--- a/osdep.c
+++ b/osdep.c
@@ -33,6 +33,9 @@
 #include <sys/statvfs.h>
 #endif
 
+/* Needed early for _BSD etc. */
+#include "config-host.h"
+
 #ifdef _WIN32
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
diff --git a/savevm.c b/savevm.c
index a28af04215ebd4e0bc095b24af2912fc20cbb4f9..a25d3658f02eaf8cb5fb5d8a968e4ae1ca0083b7 100644
--- a/savevm.c
+++ b/savevm.c
@@ -29,6 +29,9 @@
 #include <sys/time.h>
 #include <zlib.h>
 
+/* Needed early for _BSD etc. */
+#include "config-host.h"
+
 #ifndef _WIN32
 #include <sys/times.h>
 #include <sys/wait.h>
diff --git a/vl.c b/vl.c
index 00aae19c56a20c242cc9e7aa321df2ad8d0383af..804c835e4e54bf5cd7736558990596dff0ab4b2e 100644
--- a/vl.c
+++ b/vl.c
@@ -29,6 +29,9 @@
 #include <sys/time.h>
 #include <zlib.h>
 
+/* Needed early for _BSD etc. */
+#include "config-host.h"
+
 #ifndef _WIN32
 #include <pwd.h>
 #include <sys/times.h>