diff --git a/types/fnando__sparkline/fnando__sparkline-tests.ts b/types/fnando__sparkline/fnando__sparkline-tests.ts
index 8c09cfe4d0..713774ce32 100644
--- a/types/fnando__sparkline/fnando__sparkline-tests.ts
+++ b/types/fnando__sparkline/fnando__sparkline-tests.ts
@@ -4,7 +4,7 @@ import { sparkline } from '@fnando/sparkline';
 import * as sparkline2 from '@fnando/sparkline';
 import sparkline3 from '@fnando/sparkline';
 
-const svg = document.createElement('svg') as any as SVGElement;
+const svg = document.createElement('svg') as any as SVGSVGElement;
 
 // number entries
 sparkline(svg, [1, 2, 3]);
diff --git a/types/fnando__sparkline/index.d.ts b/types/fnando__sparkline/index.d.ts
index f8ade4e86f..e6ae8a2451 100644
--- a/types/fnando__sparkline/index.d.ts
+++ b/types/fnando__sparkline/index.d.ts
@@ -49,7 +49,7 @@ type SparklineNonNativeOptions<TEntry> = SparklineOptions | SparklineOptionsFetc
  * @param entries You can either provide an array of numbers or an array of objects that respond to .value. If you have a different data structure, see options.fetch.
  * @param options This optional argument allows you to further customize the sparkline.
  */
-export function sparkline<TEntry extends SparklineNativeEntry>(svg: SVGElement, entries: TEntry[], options?: SparklineNativeOptions<TEntry>): string;
-export function sparkline<TEntry>(svg: SVGElement, entries: TEntry[], options: SparklineNonNativeOptions<TEntry>): string;
+export function sparkline<TEntry extends SparklineNativeEntry>(svg: SVGSVGElement, entries: TEntry[], options?: SparklineNativeOptions<TEntry>): string;
+export function sparkline<TEntry>(svg: SVGSVGElement, entries: TEntry[], options: SparklineNonNativeOptions<TEntry>): string;
 
 export default sparkline;