diff --git a/js-packages/@fortawesome/fontawesome-svg-core/index.d.ts b/js-packages/@fortawesome/fontawesome-svg-core/index.d.ts
index 93d909288..04d8f246f 100644
--- a/js-packages/@fortawesome/fontawesome-svg-core/index.d.ts
+++ b/js-packages/@fortawesome/fontawesome-svg-core/index.d.ts
@@ -101,7 +101,7 @@ export interface IconParams extends Params {
   mask?: IconLookup;
 }
 export interface DOM {
-  i2svg(params?: { node: Node; callback: () => void }): void;
+  i2svg(params?: { node?: Node; callback?: () => void }): void;
   css(): string;
   insertCss(): string;
   watch(): void;