diff --git a/src/main.c b/src/main.c
index 6cedc2f..994381c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -160,7 +160,7 @@ static void Update(void)
 	// TODO: PID control for fan pulse-width modulation?
 
 	// The dead band represents the lower and upper limits
-	// of the error between which the controller doesn’t
+	// of the error between which the controller doesn't
 	// react.
 
 	state = S_IDLE;