diff --git a/ROMFS/px4fmu_common/init.d/4011_dji_f450 b/ROMFS/px4fmu_common/init.d/4011_dji_f450
index 3682381a19..1075a5376f 100644
--- a/ROMFS/px4fmu_common/init.d/4011_dji_f450
+++ b/ROMFS/px4fmu_common/init.d/4011_dji_f450
@@ -27,6 +27,20 @@ then
 	param set PWM_MAX 1950
 fi
 
+# Transitional support: ensure suitable PWM min/max param values
+if param compare PWM_MIN 1000
+then
+	param set PWM_MIN 1230
+fi
+if param compare PWM_MAX 2000
+then
+	param set PWM_MAX 1950
+fi
+if param compare PWM_DISARMED 0
+then
+	param set PWM_DISARMED 900
+fi
+
 set PWM_DISARMED p:PWM_DISARMED
 set PWM_MIN p:PWM_MIN
 set PWM_MAX p:PWM_MAX