diff --git a/ROMFS/px4fmu_common/init.d/rc.sensors b/ROMFS/px4fmu_common/init.d/rc.sensors
index 474db36ef7..c749233139 100644
--- a/ROMFS/px4fmu_common/init.d/rc.sensors
+++ b/ROMFS/px4fmu_common/init.d/rc.sensors
@@ -115,8 +115,15 @@ if px4flow start
 then
 fi
 
-if ll40ls start
+if param compare SENS_LL40LS_ENABLE 1
 then
+	if pwm_input start
+	then
+	fi
+	
+	if ll40ls start pwm
+	then
+	fi
 fi
 
 #