diff --git a/documentation/demos/621d51ea7de19608127e/code.js b/documentation/demos/621d51ea7de19608127e/code.js
index 0e91174b4..0a6aab122 100644
--- a/documentation/demos/621d51ea7de19608127e/code.js
+++ b/documentation/demos/621d51ea7de19608127e/code.js
@@ -13,7 +13,7 @@ var cy = cytoscape({
         'text-valign': 'center',
         'color': 'white',
         'text-outline-width': 2,
-        'backgrund-color': '#999',
+        'background-color': '#999',
         'text-outline-color': '#999'
       })
     .selector('edge')
@@ -77,4 +77,4 @@ cy.on('tap', function(e){
   }
 });
 
-}); // on dom ready
\ No newline at end of file
+}); // on dom ready