diff --git a/artiq/gateware/targets/kc705_drtio_satellite.py b/artiq/gateware/targets/kc705_drtio_satellite.py
index b902289ff..cc0fd9ee4 100755
--- a/artiq/gateware/targets/kc705_drtio_satellite.py
+++ b/artiq/gateware/targets/kc705_drtio_satellite.py
@@ -45,6 +45,9 @@ def get_i2c_program(sys_clk_freq):
         [(0x68 << 1), 43,  (N31    >> 16) & 0xff],
         [(0x68 << 1), 44,  (N31    >> 8)  & 0xff],
         [(0x68 << 1), 45,  (N31)          & 0xff],
+        [(0x68 << 1), 46,  (N32    >> 16) & 0xff],
+        [(0x68 << 1), 47,  (N32    >> 8)  & 0xff],
+        [(0x68 << 1), 48,  (N32)          & 0xff],
         [(0x68 << 1), 137,          0x01],     # FASTLOCK=1
         [(0x68 << 1), 136,          0x40],     # ICAL=1
     ]