diff --git a/src/main/target/SITL/target.h b/src/main/target/SITL/target.h
index a6fd4d9756..09409cf783 100644
--- a/src/main/target/SITL/target.h
+++ b/src/main/target/SITL/target.h
@@ -120,7 +120,7 @@
 #define SOFTSERIAL_1_TIMER 2
 #define SOFTSERIAL_2_TIMER 3
 
-#define TARGET_IO_PORTA         0x0001   // define one pin to avoid warnings
+#define DEFIO_NO_PORTS   // suppress 'no pins defined' warning
 
 #define WS2811_DMA_TC_FLAG (void *)1
 #define WS2811_DMA_HANDLER_IDENTIFER 0