diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
index 1dcb714af55a2e..9c8b6d5eaec9ef 100644
--- a/drivers/i2c/busses/i2c-at91.c
+++ b/drivers/i2c/busses/i2c-at91.c
@@ -16,6 +16,7 @@
 #include <linux/module.h>
 #include <linux/version.h>
 #include <linux/kernel.h>
+#include <linux/err.h>
 #include <linux/slab.h>
 #include <linux/types.h>
 #include <linux/delay.h>