diff --git a/libkms/linux.c b/libkms/linux.c
index 6e0da83..6343ab5 100644
--- a/libkms/linux.c
+++ b/libkms/linux.c
@@ -44,6 +44,7 @@
 #ifdef HAVE_SYS_MKDEV_H
 #include <sys/mkdev.h>
 #endif
+#include <sys/sysmacros.h>
 
 #include "libdrm_macros.h"
 #include "internal.h"
diff --git a/xf86drm.c b/xf86drm.c
index 5f587d9..dd6d04f 100644
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -58,6 +58,7 @@
 # include <sys/mkdev.h> /* defines major(), minor(), and makedev() on Solaris */
 #endif
 #include <math.h>
+#include <sys/sysmacros.h>
 
 /* Not all systems have MAP_FAILED defined */
 #ifndef MAP_FAILED