diff --git a/src/index.d.ts b/src/index.d.ts
index eeb84ff..e99c6d3 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -1,15 +1,15 @@
-interface DOMRectReadOnly {
-    readonly x: number;
-    readonly y: number;
-    readonly width: number;
-    readonly height: number;
-    readonly top: number;
-    readonly right: number;
-    readonly bottom: number;
-    readonly left: number;
-}
-
 declare global {
+    interface DOMRectReadOnly {
+        readonly x: number;
+        readonly y: number;
+        readonly width: number;
+        readonly height: number;
+        readonly top: number;
+        readonly right: number;
+        readonly bottom: number;
+        readonly left: number;
+    }
+    
     interface ResizeObserverCallback {
         (entries: ResizeObserverEntry[], observer: ResizeObserver): void
     }