diff --git a/Multiprotocol/WFLY2_a7105.ino b/Multiprotocol/WFLY2_a7105.ino
index 2a3f34c..1ad27a3 100644
--- a/Multiprotocol/WFLY2_a7105.ino
+++ b/Multiprotocol/WFLY2_a7105.ino
@@ -104,9 +104,9 @@ static void __attribute__((unused)) WFLY2_build_packet()
 			packet[0] = 0x05;	//PPM/WBUS packet
 			packet[5] = 0x01;
 			if(option)
-				packet[6] = 0x00;	// WBUS
-			else
 				packet[6] = 0x01;	// PPM
+			else
+				packet[6] = 0x00;	// WBUS
 			prev_option = option;
 		}
 		else
diff --git a/Protocols_Details.md b/Protocols_Details.md
index 90155fa..68e8237 100644
--- a/Protocols_Details.md
+++ b/Protocols_Details.md
@@ -340,6 +340,8 @@ CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10
 ---|---|---|---|---|---|---|---|---|----
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10
 
+Option is used to select between WBUS=0 and PPM=1
+
 ***
 # CC2500 RF Module