diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index c4db582..9d9d1f5 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -379,7 +379,7 @@ struct virtio_device_id {
 
 /* i2c */
 
-#define I2C_NAME_SIZE	20
+#define I2C_NAME_SIZE	23
 #define I2C_MODULE_PREFIX "i2c:"
 
 struct i2c_device_id {