diff --git a/drivers/hwmon/dme1737.c b/drivers/hwmon/dme1737.c
index 9814d51..2c2cb1e 100644
--- a/drivers/hwmon/dme1737.c
+++ b/drivers/hwmon/dme1737.c
@@ -1134,7 +1134,7 @@
 		res = PWM_FREQ_FROM_REG(data->pwm_freq[ix]);
 		break;
 	case SYS_PWM_ENABLE:
-		if (ix > 3) {
+		if (ix >= 3) {
 			res = 1; /* pwm[5-6] hard-wired to manual mode */
 		} else {
 			res = PWM_EN_FROM_REG(data->pwm_config[ix]);