diff --git a/doc/src/sgml/acronyms.sgml b/doc/src/sgml/acronyms.sgml
index 751c46de6d..d991530632 100644
--- a/doc/src/sgml/acronyms.sgml
+++ b/doc/src/sgml/acronyms.sgml
@@ -23,7 +23,7 @@
     <term><acronym>API</acronym></term>
     <listitem>
      <para>
-      <ulink url="http://en.wikipedia.org/wiki/API">Application Programming Interface</ulink>
+      <ulink url="https://en.wikipedia.org/wiki/Application_programming_interface">Application Programming Interface</ulink>
      </para>
     </listitem>
    </varlistentry>
@@ -260,7 +260,7 @@
     <term><acronym>GMT</acronym></term>
     <listitem>
      <para>
-      <ulink url="http://en.wikipedia.org/wiki/GMT">Greenwich Mean Time</ulink>
+      <ulink url="https://en.wikipedia.org/wiki/Greenwich_Mean_Time">Greenwich Mean Time</ulink>
      </para>
     </listitem>
    </varlistentry>
@@ -352,7 +352,7 @@
     <term><acronym>ISSN</acronym></term>
     <listitem>
      <para>
-      <ulink url="http://en.wikipedia.org/wiki/Issn">International Standard
+      <ulink url="https://en.wikipedia.org/wiki/International_Standard_Serial_Number">International Standard
       Serial Number</ulink>
      </para>
     </listitem>
@@ -455,7 +455,7 @@
     <term><acronym>OLAP</acronym></term>
     <listitem>
      <para>
-      <ulink url="http://en.wikipedia.org/wiki/Olap">Online Analytical
+      <ulink url="https://en.wikipedia.org/wiki/Online_analytical_processing">Online Analytical
       Processing</ulink>
      </para>
     </listitem>
@@ -465,7 +465,7 @@
     <term><acronym>OLTP</acronym></term>
     <listitem>
      <para>
-      <ulink url="http://en.wikipedia.org/wiki/OLTP">Online Transaction
+      <ulink url="https://en.wikipedia.org/wiki/Online_transaction_processing">Online Transaction
       Processing</ulink>
      </para>
     </listitem>
@@ -475,7 +475,7 @@
     <term><acronym>ORDBMS</acronym></term>
     <listitem>
      <para>
-      <ulink url="http://en.wikipedia.org/wiki/ORDBMS">Object-Relational
+      <ulink url="https://en.wikipedia.org/wiki/Object-relational_database">Object-Relational
       Database Management System</ulink>
      </para>
     </listitem>
@@ -574,7 +574,7 @@
     <term><acronym>SGML</acronym></term>
     <listitem>
      <para>
-      <ulink url="http://en.wikipedia.org/wiki/SGML">Standard Generalized
+      <ulink url="https://en.wikipedia.org/wiki/Standard_Generalized_Markup_Language">Standard Generalized
       Markup Language</ulink>
      </para>
     </listitem>