diff --git a/configs/same70-xplained/include/board.h b/configs/same70-xplained/include/board.h
index 3f0cc2868d..21c55f3ac6 100644
--- a/configs/same70-xplained/include/board.h
+++ b/configs/same70-xplained/include/board.h
@@ -58,11 +58,12 @@
  *   CPU clock: 120MHz
  *
  * There can be two on-board crystals.  However, the the 32.768 crystal is not
- * populated on the stock SAME70.
+ * populated on the stock SAME70.  The fallback is to use th on-chip, slow RC
+ * oscillator which has a frequency of 22-42 KHz, nominally 32 KHz.
  */
 
 #undef  BOARD_HAVE_SLOWXTAL                   /* Slow crystal not populated */
-#define BOARD_SLOWCLK_FREQUENCY    (32768)    /* 32.768 KHz slow crystal oscillator */
+#define BOARD_SLOWCLK_FREQUENCY    (32000)    /* 32 KHz RC oscillator (nominal)  */
 #define BOARD_MAINOSC_FREQUENCY    (12000000) /* 12 MHz main oscillator */
 
 /* Main oscillator register settings.