diff --git a/packages/frontend/src/lib/ImageCompositor.ts b/packages/frontend/src/lib/ImageCompositor.ts
index a26302af77..3725f94c4d 100644
--- a/packages/frontend/src/lib/ImageCompositor.ts
+++ b/packages/frontend/src/lib/ImageCompositor.ts
@@ -20,7 +20,7 @@ export type ImageCompositorFunction<PS extends ImageCompositorFunctionParams = I
 	}) => void;
 };
 
-export type ImageCompositorLayer<FNS extends Record<string, ImageCompositorFunction> = any> = {
+export type ImageCompositorLayer<FNS extends Record<string, ImageCompositorFunction> = Record<string, ImageCompositorFunction>> = {
 	[K in keyof FNS]: {
 		id: string;
 		functionId: K;
@@ -219,7 +219,7 @@ export class ImageCompositor<FNS extends Record<string, ImageCompositorFunction<
 				gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, resultTexture, 0);
 			}
 
-			this.renderLayer(layer, preTexture, isLast);
+			this.renderLayer(layer as ImageCompositorLayer, preTexture, isLast);
 
 			preTexture = resultTexture;
 		}
diff --git a/packages/frontend/src/utility/image-effector/ImageEffector.ts b/packages/frontend/src/utility/image-effector/ImageEffector.ts
index b4295c4637..9d5b961416 100644
--- a/packages/frontend/src/utility/image-effector/ImageEffector.ts
+++ b/packages/frontend/src/utility/image-effector/ImageEffector.ts
@@ -4,7 +4,7 @@
  */
 
 import { FXS } from './fxs.js';
-import type { ImageCompositorFunction, ImageCompositorLayer } from '@/lib/ImageCompositor.js';
+import type { ImageCompositorFunction } from '@/lib/ImageCompositor.js';
 import { ImageCompositor } from '@/lib/ImageCompositor.js';
 
 export type ImageEffectorRGB = [r: number, g: number, b: number];
diff --git a/packages/frontend/src/utility/watermark/watermark.ts b/packages/frontend/src/utility/watermark/watermark.ts
index 62efcd12b6..68c80824fc 100644
--- a/packages/frontend/src/utility/watermark/watermark.ts
+++ b/packages/frontend/src/utility/watermark/watermark.ts
@@ -33,7 +33,7 @@ export const fn = defineImageCompositorFunction<Partial<{
 		gl.uniform1i(u.noBBoxExpansion, params.noBoundingBoxExpansion ? 1 : 0);
 
 		// ウォーターマークテクスチャ
-		const wm = textures.get(params.watermark);
+		const wm = params.watermark ? textures.get(params.watermark) : null;
 		if (wm) {
 			gl.activeTexture(gl.TEXTURE1);
 			gl.bindTexture(gl.TEXTURE_2D, wm.texture);