diff --git a/artiq/gateware/targets/kasli.py b/artiq/gateware/targets/kasli.py
index f9164bba1..46707ef12 100755
--- a/artiq/gateware/targets/kasli.py
+++ b/artiq/gateware/targets/kasli.py
@@ -330,7 +330,7 @@ class Satellite(BaseSoC):
             i_I=si5324_clkout.p, i_IB=si5324_clkout.n,
             o_O=si5324_clkout_buf)
         qpll_drtio_settings = QPLLSettings(
-            refclksel=0b010,
+            refclksel=0b001,
             fbdiv=4,
             fbdiv_45=5,
             refclk_div=1)