diff --git a/include/nvmem.h b/include/nvmem.h
index 822e698..e6a8a98 100644
--- a/include/nvmem.h
+++ b/include/nvmem.h
@@ -6,6 +6,8 @@
 #ifndef NVMEM_H
 #define NVMEM_H
 
+#include <linux/errno.h>
+
 /**
  * DOC: Design
  *