diff --git a/interface.cpp b/interface.cpp
index b4de9e2..3e423b8 100644
--- a/interface.cpp
+++ b/interface.cpp
@@ -2495,6 +2495,8 @@ void UI_Mainwindow::trig50pctButtonClicked()
 
   tmcdev_write(device, ":TLHA");
 
+  usleep(30000);
+
   tmcdev_write(device, ":TRIG:EDG:LEV?");
 
   tmcdev_read(device);