@@ -95,7 +95,15 @@ const Reflex = (Comp) => {
     col: React.PropTypes.oneOf([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),
     sm: React.PropTypes.oneOf([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),
     md: React.PropTypes.oneOf([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),
-    lg: React.PropTypes.oneOf([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12])
+    lg: React.PropTypes.oneOf([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),
+    is: (props, propName, componentName) => {
+      if (props[propName]) {
+        return new Error(
+          'Warning! Deprecated prop `' + propName + '` supplied to' +
+            ' `' + componentName + '`. Use the Reflex higher order component instead. https://github.com/jxnblk/reflexbox/'
+        )
+      }
+    }
   }
 
   return ReflexWrap