diff --git a/firmware/export/config-ondavx747.h b/firmware/export/config-ondavx747.h
index a5f937f78e..0e77613a81 100644
--- a/firmware/export/config-ondavx747.h
+++ b/firmware/export/config-ondavx747.h
@@ -116,8 +116,8 @@
 #define CONFIG_BACKLIGHT_FADING BACKLIGHT_FADING_SW_HW_REG
 
 /* Main LCD backlight brightness range and defaults */
-#define MIN_BRIGHTNESS_SETTING          0
-#define MAX_BRIGHTNESS_SETTING          15
+#define MIN_BRIGHTNESS_SETTING          1
+#define MAX_BRIGHTNESS_SETTING          16
 #define DEFAULT_BRIGHTNESS_SETTING      10 /* "full brightness" */
 #define DEFAULT_DIMNESS_SETTING         1  /* "most dim" */
 
diff --git a/firmware/target/mips/ingenic_jz47xx/onda_vx747/backlight-onda_vx7X7.c b/firmware/target/mips/ingenic_jz47xx/onda_vx747/backlight-onda_vx7X7.c
index 48c4e2e636..78ff786755 100644
--- a/firmware/target/mips/ingenic_jz47xx/onda_vx747/backlight-onda_vx7X7.c
+++ b/firmware/target/mips/ingenic_jz47xx/onda_vx747/backlight-onda_vx7X7.c
@@ -44,7 +44,7 @@ static void set_backlight(int val)
     __tcu_stop_counter(BACKLIGHT_PWM);
 
     __tcu_set_count(BACKLIGHT_PWM, 0);
-    __tcu_set_half_data(BACKLIGHT_PWM, logtable[val]);
+    __tcu_set_half_data(BACKLIGHT_PWM, logtable[val - 1]);
     __tcu_set_full_data(BACKLIGHT_PWM, 256);
 
     __tcu_start_counter(BACKLIGHT_PWM);