diff --git a/src/js/modules/webslides.js b/src/js/modules/webslides.js
index ae47377..139b303 100644
--- a/src/js/modules/webslides.js
+++ b/src/js/modules/webslides.js
@@ -347,7 +347,7 @@ export default class WebSlides {
   play(time) {
     time = time || this.autoslide_;
 
-    if (!this.interval_ && Number.isInteger(time) && time > 0) {
+    if (!this.interval_ && typeof time === 'number' && time > 0) {
       this.interval_ = setInterval(this.goNext.bind(this), time);
     }
   }
diff --git a/src/js/plugins/hash.js b/src/js/plugins/hash.js
index f447d37..43f834f 100644
--- a/src/js/plugins/hash.js
+++ b/src/js/plugins/hash.js
@@ -47,7 +47,7 @@ export default class Hash {
       slide = parseInt(results[1], 10);
     }
 
-    if (!Number.isInteger(slide) || slide < 0 || !Array.isArray(results)) {
+    if (typeof slide !== 'number' || slide < 0 || !Array.isArray(results)) {
       slide = null;
     } else {
       slide--; // Convert to 0 index