diff --git a/06-Multivariate-Kalman-Filters.ipynb b/06-Multivariate-Kalman-Filters.ipynb
index 0a659b6..93b2aa9 100644
--- a/06-Multivariate-Kalman-Filters.ipynb
+++ b/06-Multivariate-Kalman-Filters.ipynb
@@ -421,7 +421,7 @@
     "\n",
     "I don't want you to memorize these equations, but I have listed the univariate and multivariate equations below. They are quite similar.\n",
     "\n",
-    "<U>**Predict**</u>\n",
+    "<u>**Predict**</u>\n",
     "\n",
     "$\\begin{array}{|l|l|}\n",
     "\\hline\n",