diff --git a/user/tests/wiring/api/arduino.cpp b/user/tests/wiring/api/arduino.cpp
index 35c159f924..3f5c0ec528 100644
--- a/user/tests/wiring/api/arduino.cpp
+++ b/user/tests/wiring/api/arduino.cpp
@@ -121,5 +121,5 @@ test(bytes) {
 	bitSet(x,4);
 	bitClear(x,4);
 	(void)x;
-	bit(3);
+	(void)bit(3);
 }