diff --git a/forces-and-motion-basics_en.html b/forces-and-motion-basics_en.html
index 57b21652..575b42c8 100644
--- a/forces-and-motion-basics_en.html
+++ b/forces-and-motion-basics_en.html
@@ -125,7 +125,6 @@
 
   if ( brand === 'phet-io' ) {
     preloads = preloads.concat( [
-      '../chipper/js/phet-io/phetioCompareAPIs.js',
       '../phet-io/js/phet-io-initialize-globals.js',
       '../forces-and-motion-basics/js/forces-and-motion-basics-phet-io-overrides.js'
     ] );