diff --git a/gravity-force-lab-basics_a11y_view.html b/gravity-force-lab-basics_a11y_view.html
index 4a79c79..0d3ada5 100644
--- a/gravity-force-lab-basics_a11y_view.html
+++ b/gravity-force-lab-basics_a11y_view.html
@@ -224,10 +224,10 @@ <h3>PDOM & Descriptions for Gravity Force Lab: Basics</h3>
   }
 
   const noPostMessage = simulationQueryString.indexOf( 'postMessageOnLoad&postMessageOnError' ) === -1;
-  const noAccessibility = simulationQueryString.indexOf( 'supportsDescriptions' ) === -1;
+  const noAccessibility = simulationQueryString.indexOf( 'supportsDescription' ) === -1;
 
   noPostMessage && ( simulationQueryString += 'postMessageOnLoad&postMessageOnError&' );
-  noAccessibility && ( simulationQueryString += 'supportsDescriptions' );
+  noAccessibility && ( simulationQueryString += 'supportsDescription' );
 
   const repoLocale = 'gravity-force-lab-basics_en';
   const filenameEnding = IS_BUILT ? '_phet.html' : '.html';
diff --git a/gravity-force-lab-basics_en.html b/gravity-force-lab-basics_en.html
index 3502557..b977f51 100644
--- a/gravity-force-lab-basics_en.html
+++ b/gravity-force-lab-basics_en.html
@@ -44,7 +44,7 @@
           "phet-io",
           "adapted-from-phet"
         ],
-        "supportsInteractiveDescriptions": true,
+        "supportsInteractiveDescription": true,
         "supportsSound": true,
         "simulation": true
       },
diff --git a/package.json b/package.json
index 3e6af9d..5c25803 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
       "phet-io",
       "adapted-from-phet"
     ],
-    "supportsInteractiveDescriptions": true,
+    "supportsInteractiveDescription": true,
     "supportsSound": true,
     "simulation": true
   },