diff --git a/server/event.c b/server/event.c
index c7424dfe8ff..f1b79b1b35e 100644
--- a/server/event.c
+++ b/server/event.c
@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <sys/types.h>
 
 #include "ntstatus.h"
 #define WIN32_NO_STATUS
diff --git a/server/handle.c b/server/handle.c
index 6a5416bcb84..13e40770aea 100644
--- a/server/handle.c
+++ b/server/handle.c
@@ -26,6 +26,7 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/types.h>
 
 #include "ntstatus.h"
 #define WIN32_NO_STATUS
diff --git a/server/mutex.c b/server/mutex.c
index 906e1c060e9..af0efe72132 100644
--- a/server/mutex.c
+++ b/server/mutex.c
@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <sys/types.h>
 
 #include "ntstatus.h"
 #define WIN32_NO_STATUS
diff --git a/server/named_pipe.c b/server/named_pipe.c
index 6964ab1b2ee..1bbf7f17a3a 100644
--- a/server/named_pipe.c
+++ b/server/named_pipe.c
@@ -27,6 +27,7 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/types.h>
 
 #include "ntstatus.h"
 #define WIN32_NO_STATUS
diff --git a/server/object.c b/server/object.c
index e438a6d41ba..45ecbba3881 100644
--- a/server/object.c
+++ b/server/object.c
@@ -27,6 +27,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <stdarg.h>
+#include <sys/types.h>
 #ifdef HAVE_VALGRIND_MEMCHECK_H
 #include <valgrind/memcheck.h>
 #endif
diff --git a/server/registry.c b/server/registry.c
index 4ba5c86ae58..b00abdbc004 100644
--- a/server/registry.c
+++ b/server/registry.c
@@ -34,6 +34,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <sys/stat.h>
+#include <sys/types.h>
 #include <unistd.h>
 
 #include "ntstatus.h"
diff --git a/server/semaphore.c b/server/semaphore.c
index 6a8b871940f..53b42a886df 100644
--- a/server/semaphore.c
+++ b/server/semaphore.c
@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <sys/types.h>
 
 #include "ntstatus.h"
 #define WIN32_NO_STATUS
diff --git a/server/token.c b/server/token.c
index 5d2fc9555a2..820a7a0e07d 100644
--- a/server/token.c
+++ b/server/token.c
@@ -26,6 +26,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <sys/types.h>
 #include <unistd.h>
 
 #include "ntstatus.h"
diff --git a/server/winstation.c b/server/winstation.c
index 6f2dfcf4e31..854affead77 100644
--- a/server/winstation.c
+++ b/server/winstation.c
@@ -22,6 +22,7 @@
 
 #include <stdio.h>
 #include <stdarg.h>
+#include <sys/types.h>
 
 #include "ntstatus.h"
 #define WIN32_NO_STATUS