diff --git a/host/lib/usrp/usrp1/usrp1_impl.hpp b/host/lib/usrp/usrp1/usrp1_impl
index fd1b8c1..66fd5fe 100644
--- a/host/lib/usrp/usrp1/usrp1_impl.hpp
+++ b/host/lib/usrp/usrp1/usrp1_impl.hpp
@@ -140,6 +140,7 @@ private:
     }
     void enable_tx(bool enb){
         _tx_enabled = enb;
+        if (not enb) return;
         _fx2_ctrl->usrp_tx_enable(enb);
     }