diff --git a/index.d.ts b/index.d.ts
index 394c4eb..ebebd61 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -53,13 +53,6 @@
     className?: string;
 };
 
-export type FilterSize = {
-    width: number;
-    height: number;
-    x: number;
-    y: number;
-};
-
 export type SVGRendererConfig = BaseRendererConfig & {
     title?: string;
     description?: string;
@@ -69,7 +62,7 @@
     viewBoxOnly?: boolean;
     viewBoxSize?: string;
     focusable?: boolean;
-    filterSize?: FilterSize;
+    filterSize?: FilterSizeConfig;
 };
 
 export type CanvasRendererConfig = BaseRendererConfig & {
@@ -102,6 +95,13 @@
     animationData?: any;
 }
 
+export type FilterSizeConfig = {
+    width: string;
+    height: string;
+    x: string;
+    y: string;
+};
+
 type LottiePlayer = {
     play(name?: string): void;
     pause(name?: string): void;