diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index a498dde024e1b58c55555e00d349a5cc28846218..49c9e2c1433d98cc82c16346242fc68eb0548897 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -849,13 +849,15 @@ struct rt2x00_dev {
 static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev,
 				  const unsigned int word, u32 *data)
 {
-	*data = rt2x00dev->rf[word];
+	BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
+	*data = rt2x00dev->rf[word - 1];
 }
 
 static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev,
 				   const unsigned int word, u32 data)
 {
-	rt2x00dev->rf[word] = data;
+	BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
+	rt2x00dev->rf[word - 1] = data;
 }
 
 /*