diff --git a/artiq/gateware/targets/kc705_dds.py b/artiq/gateware/targets/kc705_dds.py
index e96a02ea4..7aad8930b 100755
--- a/artiq/gateware/targets/kc705_dds.py
+++ b/artiq/gateware/targets/kc705_dds.py
@@ -99,7 +99,7 @@ _ams101_dac = [
 
 _sdcard_spi_33 = [
   ("sdcard_spi_33", 0,
-        Subsignal("miso", Pins("AC20")),
+        Subsignal("miso", Pins("AC20"), Misc("PULLUP")),
         Subsignal("clk", Pins("AB23")),
         Subsignal("mosi", Pins("AB22")),
         Subsignal("cs_n", Pins("AC21")),