diff --git a/Doc/Sd1/LanguageFundamentals/languageFundamentals.xml b/Doc/Sd1/LanguageFundamentals/languageFundamentals.xml
index 19cae107671ef7479e81879153fbe25f2916e1d8..ecea90536b8e95d6a8ec03a1481f569325ebe953 100644
--- a/Doc/Sd1/LanguageFundamentals/languageFundamentals.xml
+++ b/Doc/Sd1/LanguageFundamentals/languageFundamentals.xml
@@ -1702,7 +1702,7 @@ void main(void) {
                   <para><link
                   xlink:href="https://www.youtube.com/watch?v=gp_D8r-2hwk">related
                   video</link> and <link
-                  xlink:href="youtube.com/watch?v=5tJPXYA0Nec">explanations</link></para>
+                  xlink:href="https://youtube.com/watch?v=5tJPXYA0Nec">explanations</link></para>
                 </glossdef>
               </glossentry>
             </glosslist></td>