diff --git a/packages/material-ui/src/Tab/Tab.js b/packages/material-ui/src/Tab/Tab.js
index eb82ff9098cb8b..d5934abf5cc671 100644
--- a/packages/material-ui/src/Tab/Tab.js
+++ b/packages/material-ui/src/Tab/Tab.js
@@ -66,7 +66,7 @@ export const styles = theme => ({
   fullWidth: {
     flexShrink: 1,
     flexGrow: 1,
-    maxWidth: 'auto',
+    maxWidth: 'none',
   },
   /* Styles applied to the `icon` and `label`'s wrapper element. */
   wrapper: {