diff --git a/math_probability/math_ops/math_ops_challenge.ipynb b/math_probability/math_ops/math_ops_challenge.ipynb
index bcd19d4a..8257a9b6 100644
--- a/math_probability/math_ops/math_ops_challenge.ipynb
+++ b/math_probability/math_ops/math_ops_challenge.ipynb
@@ -143,7 +143,7 @@
     "        assert_equal(solution.max, 9)\n",
     "        assert_equal(solution.min, 2)\n",
     "        assert_equal(solution.mean, 5)\n",
-    "        assert_true(solution.mode in (2, 92))\n",
+    "        assert_true(solution.mode in (2, 9))\n",
     "        print('Success: test_math_ops')\n",
     "\n",
     "\n",