diff --git a/keyboards/4pplet/eagle_viper_rep/rev_b/keyboard.json b/keyboards/4pplet/eagle_viper_rep/rev_b/keyboard.json
index bf7d11f74ba..63f1b66dd8e 100644
--- a/keyboards/4pplet/eagle_viper_rep/rev_b/keyboard.json
+++ b/keyboards/4pplet/eagle_viper_rep/rev_b/keyboard.json
@@ -44,7 +44,7 @@
     "rgblight": {
         "saturation_steps": 8,
         "brightness_steps": 8,
-        "led_count": 16,
+        "led_count": 17,
         "animations": {
             "breathing": true,
             "rainbow_mood": true,
diff --git a/keyboards/4pplet/eagle_viper_rep/rev_b/rev_b.c b/keyboards/4pplet/eagle_viper_rep/rev_b/rev_b.c
index ab052790c3e..24035b95f65 100644
--- a/keyboards/4pplet/eagle_viper_rep/rev_b/rev_b.c
+++ b/keyboards/4pplet/eagle_viper_rep/rev_b/rev_b.c
@@ -22,6 +22,7 @@ void keyboard_pre_init_kb(void) {
     gpio_set_pin_output(LAYER_3);
     gpio_set_pin_output(LAYER_4);
     gpio_set_pin_output(LAYER_5);
+    rgblight_set_effect_range(0, 16);
     keyboard_pre_init_user();
 }