diff --git a/configure.ac b/configure.ac
index 5f3adb5..0c544c8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -126,6 +126,7 @@ AC_CHECK_PROGS([M4], [m4])
 AC_CHECK_PROG(PERL, perl, perl)
 
 AC_SYS_LARGEFILE
+AC_USE_SYSTEM_EXTENSIONS
 
 if test "${enable_create_device}" = "yes"; then
 	AC_CHECK_PROGS([MKNOD], [mknod])
diff --git a/swsusp.h b/swsusp.h
index 5f89902..6f4863e 100644
--- a/swsusp.h
+++ b/swsusp.h
@@ -9,6 +9,7 @@
  *
  */
 
+#include "config.h"
 #include <stdint.h>
 #include <linux/fs.h>
 #include <linux/suspend_ioctls.h>