diff --git a/dist/InfiniteScroll.js b/dist/InfiniteScroll.js
index 8decb7e..f78bec7 100644
--- a/dist/InfiniteScroll.js
+++ b/dist/InfiniteScroll.js
@@ -107,7 +107,7 @@ var InfiniteScroll = function (_Component) {
       } else if (this.props.isReverse) {
         offset = el.parentNode.scrollTop;
       } else {
-        offset = el.scrollHeight - el.parentNode.scrollTop - el.parentNode.clientHeight;
+        offset = el.parentNode.scrollHeight - el.parentNode.clientHeight - el.parentNode.scrollTop;
       }
 
       if (offset < Number(this.props.threshold)) {
diff --git a/src/InfiniteScroll.js b/src/InfiniteScroll.js
index 1d6be43..b81e6d2 100644
--- a/src/InfiniteScroll.js
+++ b/src/InfiniteScroll.js
@@ -105,7 +105,7 @@ export default class InfiniteScroll extends Component {
     } else if (this.props.isReverse) {
       offset = el.parentNode.scrollTop;
     } else {
-      offset = el.scrollHeight - el.parentNode.scrollTop - el.parentNode.clientHeight;
+      offset = el.parentNode.scrollHeight - el.parentNode.clientHeight - el.parentNode.scrollTop;
     }
 
     if (offset < Number(this.props.threshold)) {