diff --git a/udev/udev-sysdeps.h b/udev/udev-sysdeps.h
index 08d7e48543..e20ea48a2f 100644
--- a/udev/udev-sysdeps.h
+++ b/udev/udev-sysdeps.h
@@ -21,6 +21,7 @@
 #define _UDEV_SYSDEPS_H_
 
 #include <stdint.h>
+#include <errno.h>
 
 /* needed for our signal handlers to work */
 #undef asmlinkage