diff --git a/tools/i2cset.c b/tools/i2cset.c
index 392262b..6195633 100644
--- a/tools/i2cset.c
+++ b/tools/i2cset.c
@@ -35,7 +35,7 @@ static void help(void) __attribute__ ((noreturn));
 static void help(void)
 {
 	fprintf(stderr,
-	        "Usage: i2cset [-f] [-y] [-m MASK] I2CBUS CHIP-ADDRESS DATA-ADDRESS [VALUE] ... [MODE]\n"
+		"Usage: i2cset [-f] [-y] [-m MASK] I2CBUS CHIP-ADDRESS DATA-ADDRESS [VALUE] ... [MODE]\n"
 		"  I2CBUS is an integer or an I2C bus name\n"
 		"  ADDRESS is an integer (0x03 - 0x77)\n"
 		"  MODE is one of:\n"