diff --git a/src/scrollTo.ts b/src/scrollTo.ts
index ca81329..3901e02 100644
--- a/src/scrollTo.ts
+++ b/src/scrollTo.ts
@@ -12,7 +12,7 @@ export class ScrollTo {
   @HostListener('click', ['$event']) onClick(event: MouseEvent) {
     event.preventDefault();
     let scrollEnd: number;
-    if (this.scrollYTarget) {
+    if (!isNaN(this.scrollYTarget)) {
       if (isNaN(Number(this.scrollYTarget))) {
         throw 'scrollYTarget must have numerical values';
       }