diff --git a/rpitx.py b/rpitx.py
index 61b0f77d..eea82cd9 100644
--- a/rpitx.py
+++ b/rpitx.py
@@ -68,7 +68,7 @@ if __name__ == "__main__":
 		print("No camera")
 		camera_present = 0
 
-		while 1:
+	    while 1:
 	    	system("(while true; do (sleep 5 && cat /home/pi/CubeSatSim/wav/sstv.wav); done) | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f 434.9e3 &")
 		GPIO.output(txLed, txLedOff)
 		if (camera_present == 1):