diff --git a/manuals/en/main/install.tex b/manuals/en/main/install.tex
index a1b98b3..591fc88 100644
--- a/manuals/en/main/install.tex
+++ b/manuals/en/main/install.tex
@@ -119,6 +119,12 @@ \subsubsection{RHEL 6, CentOS 6}
 This package is available on \elink{EPEL}{https://fedoraproject.org/wiki/EPEL} 6. Make sure, it is available on your system.
 
 \begin{commands}{Bareos installation on RHEL $\ge$ 6 / CentOS $\ge$ 6}
+#
+# add EPEL repository, if not already present.
+# Required for the jansson package.
+#
+rpm -Uhv https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm
+
 #
 # define parameter
 #