diff --git a/Multiprotocol/Multiprotocol_STM32.h b/Multiprotocol/Multiprotocol_STM32.h
index d7abb07..8999ff2 100644
--- a/Multiprotocol/Multiprotocol_STM32.h
+++ b/Multiprotocol/Multiprotocol_STM32.h
@@ -156,8 +156,8 @@ enum FRSKYX
 #define SDO_pin PB14//MISO	
 #define SDI_pin PB15//MOSI							
 //
-#defined TX_INV_pin PB3
-#defined RX_INV_pin PB1
+#define TX_INV_pin PB3
+#define RX_INV_pin PB1
 //
 #define CTRL1_on  digitalWrite(CTRL1,HIGH)
 #define CTRL1_off digitalWrite(CTRL1,LOW)
@@ -492,4 +492,4 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
 	
 	
 	
-	
\ No newline at end of file
+