diff --git a/docs/src/modules/components/Ad.js b/docs/src/modules/components/Ad.js
index a411f5cb72ccf4..2d7e6502c051ac 100644
--- a/docs/src/modules/components/Ad.js
+++ b/docs/src/modules/components/Ad.js
@@ -46,7 +46,7 @@ function getAdblock(classes, t) {
 
 const disable = process.env.NODE_ENV !== 'production' && process.env.ENABLE_AD !== 'true';
 
-const inHouses = [
+const inHouseAds = [
   {
     name: 'scaffoldhub',
     link: 'https://scaffoldhub.io/?partner=1',
@@ -69,6 +69,12 @@ const inHouses = [
     description:
       '<b>Material-UI for enterprise</b><br />Available in the Tidelift Subscription. Reduce risk, and improve code health.',
   },
+  {
+    name: 'monday',
+    link: 'https://monday.com/partners/status-video?&utm_source=Partner&utm_campaign=MaterialUI',
+    img: '/static/in-house/monday.jpg',
+    description: 'Why use multiple tools to manage your projects? Meet monday.com',
+  },
 ];
 
 function Ad(props) {
@@ -148,16 +154,16 @@ function Ad(props) {
   if (adblock) {
     minHeight = 'auto';
 
-    if (random >= 0.8) {
+    if (Math.random() >= 0.8) {
       children = getAdblock(classes, t);
     } else {
-      children = <AdInHouse ad={inHouses[Math.round((inHouses.length - 1) * random)]} />;
+      children = <AdInHouse ad={inHouseAds[Math.floor(inHouseAds.length * random)]} />;
     }
   }
 
   if (!children) {
     if (carbonOut || codeFundOut) {
-      children = <AdInHouse ad={inHouses[Math.round((inHouses.length - 1) * random)]} />;
+      children = <AdInHouse ad={inHouseAds[Math.floor(inHouseAds.length * random)]} />;
       minHeight = 'auto';
     } else if (random >= 0.55) {
       children = <AdCodeFund />;
diff --git a/docs/src/modules/components/HomeQuickWord.js b/docs/src/modules/components/HomeQuickWord.js
index 92c3c31388e1ed..afa4ec8c5da7c4 100644
--- a/docs/src/modules/components/HomeQuickWord.js
+++ b/docs/src/modules/components/HomeQuickWord.js
@@ -41,7 +41,7 @@ const styles = theme => ({
 function HomeQuickWord(props) {
   const { classes } = props;
   const t = useSelector(state => state.options.t);
-  const backer = backers[Math.round((backers.length - 1) * Math.random())];
+  const backer = backers[Math.floor(backers.length * Math.random())];
 
   return (
     <div className={classes.root}>
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