diff --git a/types/react-native-canvas/index.d.ts b/types/react-native-canvas/index.d.ts
index 559b986ba8..65b80277ee 100644
--- a/types/react-native-canvas/index.d.ts
+++ b/types/react-native-canvas/index.d.ts
@@ -176,8 +176,8 @@ export class Image {
 export class ImageData {
     constructor(canvas: Canvas, data: number[], height: number, width: number);
     readonly data: number[];
-    readonly height: number;
-    readonly width: number;
+    readonly height: number | undefined;
+    readonly width: number | undefined;
 }
 
 export class Path2D {