diff --git a/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-featured-appearance-customization/material-ui/demo.jsx b/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-featured-appearance-customization/material-ui/demo.jsx
index d63afb4472..b750ead242 100644
--- a/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-featured-appearance-customization/material-ui/demo.jsx
+++ b/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-featured-appearance-customization/material-ui/demo.jsx
@@ -313,10 +313,9 @@ const PrioritySelector = withStyles(styles, { name: 'PrioritySelector' })(({
 }) => {
   const currentPriority = priority > 0 ? priorities[priority - 1] : {};
   return (
-    <FormControl className={classes.prioritySelector}>
+    <FormControl className={classes.prioritySelector} variant="standard">
       <Select
-        // inputProps={{ disableUnderline: true }}
-        // disableUnderline
+        disableUnderline
         value={priority}
         onChange={(e) => {
           priorityChange(e.target.value);
diff --git a/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-featured-editing/material-ui/demo.jsx b/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-featured-editing/material-ui/demo.jsx
index 90338f59fa..661604520e 100644
--- a/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-featured-editing/material-ui/demo.jsx
+++ b/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-featured-editing/material-ui/demo.jsx
@@ -275,8 +275,8 @@ const AppointmentFormContainer = withStyles(containerStyles, { name: 'Appointmen
 const styles = theme => ({
   addButton: {
     position: 'absolute',
-    bottom: theme.spacing(1) * 3,
-    right: theme.spacing(1) * 4,
+    bottom: theme.spacing(3),
+    right: theme.spacing(4),
   },
 });
 
diff --git a/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-featured-redux-integration/material-ui/demo.jsx b/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-featured-redux-integration/material-ui/demo.jsx
index 8edba8f688..fbaf33a6b4 100644
--- a/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-featured-redux-integration/material-ui/demo.jsx
+++ b/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-featured-redux-integration/material-ui/demo.jsx
@@ -151,6 +151,7 @@ const AppointmentContent = withStyles(styles, { name: 'AppointmentContent' })(({
 
 const Filter = withStyles(styles, { name: 'TextField' })(({ onCurrentFilterChange, currentFilter, classes }) => (
   <TextField
+    size="small"
     placeholder="Filter"
     className={classes.textField}
     value={currentFilter}
diff --git a/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-localization/material-ui/locale.jsx b/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-localization/material-ui/locale.jsx
index d219d04c66..09608e77e3 100644
--- a/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-localization/material-ui/locale.jsx
+++ b/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-localization/material-ui/locale.jsx
@@ -49,6 +49,7 @@ const LocaleSwitcher = withStyles(styles, { name: 'LocaleSwitcher' })(
       </div>
       <TextField
         select
+        variant="standard"
         value={currentLocale}
         onChange={onLocaleChange}
       >
diff --git a/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-resources/material-ui/basic.jsx b/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-resources/material-ui/basic.jsx
index 49d3a5b73e..7a7fd7fe35 100644
--- a/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-resources/material-ui/basic.jsx
+++ b/packages/dx-react-scheduler-demos/src/demo-sources/scheduler-resources/material-ui/basic.jsx
@@ -70,6 +70,7 @@ const ResourceSwitcher = withStyles(styles, { name: 'ResourceSwitcher' })(
         Main resource name:
       </div>
       <Select
+        variant="standard"
         value={mainResourceName}
         onChange={e => onChange(e.target.value)}
       >