diff --git a/hw/xfree86/drivers/modesetting/dri2.c b/hw/xfree86/drivers/modesetting/dri2.c
index 34ddec424..f2094a910 100644
--- a/hw/xfree86/drivers/modesetting/dri2.c
+++ b/hw/xfree86/drivers/modesetting/dri2.c
@@ -36,7 +36,9 @@
 #include "dix-config.h"
 #endif
 
+#include <errno.h>
 #include <time.h>
+
 #include "list.h"
 #include "xf86.h"
 #include "driver.h"
diff --git a/hw/xfree86/drivers/modesetting/driver.c b/hw/xfree86/drivers/modesetting/driver.c
index cf2d4cfe4..b33091cdc 100644
--- a/hw/xfree86/drivers/modesetting/driver.c
+++ b/hw/xfree86/drivers/modesetting/driver.c
@@ -36,8 +36,10 @@
 #include "dix-config.h"
 #endif
 
+#include <errno.h>
 #include <unistd.h>
 #include <fcntl.h>
+
 #include "xf86.h"
 #include "xf86Priv.h"
 #include "xf86_OSproc.h"
diff --git a/hw/xfree86/drivers/modesetting/pageflip.c b/hw/xfree86/drivers/modesetting/pageflip.c
index f6903adb2..f0b8d5919 100644
--- a/hw/xfree86/drivers/modesetting/pageflip.c
+++ b/hw/xfree86/drivers/modesetting/pageflip.c
@@ -24,6 +24,8 @@
 #include "dix-config.h"
 #endif
 
+#include <errno.h>
+
 #include <xserver_poll.h>
 #include <xf86drm.h>
 
diff --git a/hw/xfree86/drivers/modesetting/vblank.c b/hw/xfree86/drivers/modesetting/vblank.c
index c7aeb9f16..c89aa3f17 100644
--- a/hw/xfree86/drivers/modesetting/vblank.c
+++ b/hw/xfree86/drivers/modesetting/vblank.c
@@ -29,7 +29,9 @@
 #include "dix-config.h"
 #endif
 
+#include <errno.h>
 #include <unistd.h>
+
 #include <xf86.h>
 #include <xf86Crtc.h>
 #include "driver.h"