diff --git a/exercises/factoring_polynomials_2.html b/exercises/factoring_polynomials_2.html
index 7e4e838c1..ce6ce8f97 100644
--- a/exercises/factoring_polynomials_2.html
+++ b/exercises/factoring_polynomials_2.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html data-require="math math-format ast math-model factoring-expressions expr-helpers expr-normal-form simplify steps-helpers subhints"">
+<html data-require="math math-format ast math-model simplify factoring-expressions subhints">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 	<title>Factoring polynomials 2</title>
diff --git a/exercises/factoring_polynomials_with_two_variables.html b/exercises/factoring_polynomials_with_two_variables.html
index 063de9654..73e4cf108 100644
--- a/exercises/factoring_polynomials_with_two_variables.html
+++ b/exercises/factoring_polynomials_with_two_variables.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html data-require="math math-format ast math-model factoring-expressions expr-helpers expr-normal-form simplify steps-helpers subhints">
+<html data-require="math math-format math-model simplify factoring-expressions subhints">
 <head>
 	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 	<title>Factoring polynomials with two variables</title>
diff --git a/khan-exercise.js b/khan-exercise.js
index d624b9abd..855ab1bba 100644
--- a/khan-exercise.js
+++ b/khan-exercise.js
@@ -294,7 +294,9 @@ var Khan = (function() {
             "derivative-intuition": ["jquery.mobile.vmouse"],
             "unit-circle": ["jquery.mobile.vmouse"],
             "interactive": ["jquery.mobile.vmouse"],
-            "mean-and-median": ["stat"]
+            "mean-and-median": ["stat"],
+            "math-model": ["ast"],
+            "simplify": ["math-model", "ast", "expr-helpers", "expr-normal-form", "steps-helpers"]
         },
 
         warnTimeout: function() {
