diff --git a/tcl/drivers/trinamic.tcl b/tcl/drivers/trinamic.tcl
index 9204d3a..72fbdc1 100644
--- a/tcl/drivers/trinamic.tcl
+++ b/tcl/drivers/trinamic.tcl
@@ -361,7 +361,7 @@ proc trinamic::init {} {
   [sct controller] queue [sct]/eeprom halt "trinamic::eeprom load"
   hsetprop [sct]/encoder adjust_zero 1
   # set pullup resistors on
-  send set_io 0 0 0
+  send set_io 0 0 1
   return trinamic::complete
 }