diff --git a/src/features/countdown/api/countdown.client.ts b/src/features/countdown/api/countdown.client.ts
index 5b6871b..2b1addd 100644
--- a/src/features/countdown/api/countdown.client.ts
+++ b/src/features/countdown/api/countdown.client.ts
@@ -61,8 +61,8 @@ export async function setOverlayConfig(
     const payload: OverlayConfigPayload = {
         id,
         icon,
-        text_color: textColor,
-        bg_color: bgColor,
+        textColor,
+        bgColor,
     };
     await invokeCommand<void>("set_overlay_config", payload);
 }
diff --git a/src/features/countdown/model/countdown.types.ts b/src/features/countdown/model/countdown.types.ts
index 9b73dbe..508306f 100644
--- a/src/features/countdown/model/countdown.types.ts
+++ b/src/features/countdown/model/countdown.types.ts
@@ -56,6 +56,6 @@ export type CountdownTickPayload = {
 export type OverlayConfigPayload = {
     id: number;
     icon: string;
-    text_color: string;
-    bg_color: string;
+    textColor: string;
+    bgColor: string;
 };