diff --git a/src/librtlsdr.c b/src/librtlsdr.c
index b598202..5b33310 100644
--- a/src/librtlsdr.c
+++ b/src/librtlsdr.c
@@ -126,7 +126,6 @@ struct rtlsdr_dev {
 
 void rtlsdr_set_gpio_bit(rtlsdr_dev_t *dev, uint8_t gpio, int val);
 static int rtlsdr_set_if_freq(rtlsdr_dev_t *dev, uint32_t freq);
-static int rtlsdr_update_ds(rtlsdr_dev_t *dev, uint32_t freq, int new_ds);
 
 /* generic tuner interface functions, shall be moved to the tuner implementations */
 int e4000_init(void *dev) {
@@ -1244,25 +1243,6 @@ int rtlsdr_set_direct_sampling(rtlsdr_dev_t *dev, int on)
 	return r;
 }
 
-/* Auto enable direct sampling if tuned below 28.8 MHz */
-static int rtlsdr_update_ds(rtlsdr_dev_t *dev, uint32_t freq, int new_ds)
-{
-	int curr_ds;
-
-        if (!dev)
-                return -1;
-
-	curr_ds = rtlsdr_get_direct_sampling(dev);
-	if (curr_ds < 0)
-		return 1;
-
-	if (curr_ds != new_ds) {
-		return rtlsdr_set_direct_sampling(dev, new_ds);
-	}
-
-	return 0;
-}
-
 int rtlsdr_get_direct_sampling(rtlsdr_dev_t *dev)
 {
 	if (!dev)