1 files changed, 6 insertions, 6 deletions

diff --git a/documentation/ref-manual/introduction.xml b/documentation/ref-manual/introduction.xml
index d65ec2364e..57e4a25853 100644
--- a/documentation/ref-manual/introduction.xml
+++ b/documentation/ref-manual/introduction.xml
@@ -284,7 +284,7 @@
                         support or if you are going to use the Eclipse
                         IDE:
                         <literallayout class='monospaced'>
-     $ sudo dnf install SDL-devel xterm perl-Thread-Queue
+     $ sudo dnf install SDL-devel xterm
                         </literallayout></para></listitem>
                     <listitem><para><emphasis>Documentation:</emphasis>
                         Packages needed if you are going to build out the
@@ -375,33 +375,33 @@
                         Packages needed to build an image for a headless
                         system:
                         <literallayout class='monospaced'>
-     $ sudo dnf install &CENTOS_HOST_PACKAGES_ESSENTIAL;
+     $ sudo yum install &CENTOS_HOST_PACKAGES_ESSENTIAL;
                         </literallayout></para></listitem>
                     <listitem><para><emphasis>Graphical and Eclipse Plug-In Extras:</emphasis>
                         Packages recommended if the host system has graphics
                         support or if you are going to use the Eclipse
                         IDE:
                         <literallayout class='monospaced'>
-     $ sudo dnf install SDL-devel xterm
+     $ sudo yum install SDL-devel xterm
                         </literallayout></para></listitem>
                     <listitem><para><emphasis>Documentation:</emphasis>
                         Packages needed if you are going to build out the
                         Yocto Project documentation manuals:
                         <literallayout class='monospaced'>
-     $ sudo dnf install make docbook-style-dsssl docbook-style-xsl \
+     $ sudo yum install make docbook-style-dsssl docbook-style-xsl \
      docbook-dtds docbook-utils fop libxslt dblatex xmlto xsltproc
                         </literallayout></para></listitem>
                     <listitem><para><emphasis>ADT Installer Extras:</emphasis>
                         Packages needed if you are going to be using the
                         <ulink url='&YOCTO_DOCS_ADT_URL;#using-the-adt-installer'>Application Development Toolkit (ADT) Installer</ulink>:
                         <literallayout class='monospaced'>
-     $ sudo dnf install autoconf automake libtool glib2-devel libarchive-devel
+     $ sudo yum install autoconf automake libtool glib2-devel libarchive-devel
                         </literallayout></para></listitem>
                     <listitem><para><emphasis>OpenEmbedded Self-Test (<filename>oe-selftest</filename>):</emphasis>
                         Packages needed if you are going to run
                         <filename>oe-selftest</filename>:
                         <literallayout class='monospaced'>
-     $ sudo dnf install GitPython
+     $ sudo yum install GitPython
                         </literallayout>
                         </para></listitem>
                 </itemizedlist>