diff --git a/rpitx.sh b/rpitx.sh
index e2cb4245..e95613a1 100755
--- a/rpitx.sh
+++ b/rpitx.sh
@@ -2,4 +2,4 @@
 
 echo -e "\nrpitx for CubeSatSim at 434.9 MHz using python\n"
 
-python /home/pi/CubeSatSim/rpitx.py $1
+python -u /home/pi/CubeSatSim/rpitx.py $1