diff --git a/morph/react/block-off-when.js b/morph/react/block-off-when.js
index 27a9ee1..c045b07 100644
--- a/morph/react/block-off-when.js
+++ b/morph/react/block-off-when.js
@@ -1,5 +1,7 @@
 import { getProp, isList, isStory } from '../utils.js'
 
+let IS_MEDIA = /(!?props\.isMedia)(.+)/
+
 export function enter(node, parent, state) {
   if (node.isFragment && node.children.length === 0) return
 
@@ -36,6 +38,9 @@ export function enter(node, parent, state) {
         default:
           break
       }
+    } else if (IS_MEDIA.test(value)) {
+      let [, variable, media] = value.match(IS_MEDIA)
+      value = `${variable.replace('props.', '')}.${media.toLowerCase()}`
     }
     state.render.push(`${value} ? `)
   } else if (isStory(node, state)) {
diff --git a/package.json b/package.json
index a80f2f0..e0fe312 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@viewstools/morph",
-  "version": "19.10.9",
+  "version": "19.10.10",
   "description": "Views language morpher",
   "main": "bin.js",
   "type": "module",
diff --git a/parse/index.js b/parse/index.js
index bff5538..798027b 100644
--- a/parse/index.js
+++ b/parse/index.js
@@ -567,6 +567,10 @@ That would mean that SomeView in ${block.name} will be replaced by ${block.name}
           })
         }
 
+        if (name === 'onWhen' && /!?isMedia.+/.test(slotName)) {
+          useIsMedia = true
+        }
+
         if (name === 'format') {
           block.format = getFormat(value)
         }