diff --git a/include/envfs.h b/include/envfs.h
index fdcb8a8..27c4b42 100644
--- a/include/envfs.h
+++ b/include/envfs.h
@@ -2,6 +2,7 @@
 #define _ENVFS_H
 
 #ifdef __BAREBOX__
+#include <errno.h>
 #include <asm/byteorder.h>
 #include <linux/stringify.h>
 #endif