diff --git a/src/backlight.c b/src/backlight.c
index 129afea6..33c58b9a 100644
--- a/src/backlight.c
+++ b/src/backlight.c
@@ -34,6 +34,8 @@
 #include <sys/stat.h>
 #include <sys/ioctl.h>
 
+#include <sys/sysmacros.h>
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/src/intel_device.c b/src/intel_device.c
index 5d4398d7..ff96ab27 100644
--- a/src/intel_device.c
+++ b/src/intel_device.c
@@ -38,6 +38,8 @@
 #include <dirent.h>
 #include <errno.h>
 
+#include <sys/sysmacros.h>
+
 #include <pciaccess.h>
 
 #include <xorg-server.h>
diff --git a/tools/backlight_helper.c b/tools/backlight_helper.c
index 8b2667dc..51d2fffc 100644
--- a/tools/backlight_helper.c
+++ b/tools/backlight_helper.c
@@ -9,6 +9,8 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 
+#include <sys/sysmacros.h>
+
 #define DBG 0
 
 #if defined(__GNUC__) && (__GNUC__ > 3)