diff --git a/targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp b/targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp
index 075376c403..3bed77793b 100644
--- a/targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp
+++ b/targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp
@@ -321,13 +321,14 @@ static int trx_usrp_start(openair0_device *device) {
 
   // setup GPIO for TDD, GPIO(4) = ATR_RX
   //set data direction register (DDR) to output
-    s->usrp->set_gpio_attr("FP0", "DDR", 0x1f, 0x1f);
+    s->usrp->set_gpio_attr("FP0", "DDR", 0x7f, 0x7f);
   
   //set control register to ATR
-    s->usrp->set_gpio_attr("FP0", "CTRL", 0x1f,0x1f);
+    s->usrp->set_gpio_attr("FP0", "CTRL", 0x7f,0x7f);
   
   //set ATR register
-    s->usrp->set_gpio_attr("FP0", "ATR_RX", 1<<4, 0x1f);
+    s->usrp->set_gpio_attr("FP0", "ATR_RX", 1<<4, 0x7f);
+    s->usrp->set_gpio_attr("FP0", "ATR_RX", 1<<6, 0x7f);
 
     // init recv and send streaming
     uhd::stream_cmd_t cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS);