diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 46e4ba0b92463184d5e398345e50ca68809628b2..7d67ad1b80bae34d4eee6a6a72581aa252ffa6c0 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -1063,7 +1063,7 @@ static long i8042_panic_blink(int state)
 #ifdef CONFIG_X86
 static void i8042_dritek_enable(void)
 {
-	char param = 0x90;
+	unsigned char param = 0x90;
 	int error;
 
 	error = i8042_command(&param, 0x1059);