diff --git a/courses/main.adoc b/courses/main.adoc
index 1996ac3..9010c4a 100644
--- a/courses/main.adoc
+++ b/courses/main.adoc
@@ -43,12 +43,12 @@ image:./swarmlabn-1.png[alt="Swarm Gateway"]
 
 *To make our life easier at this task we will be using the following tools...*
 
-* Docker   image:link_icon_16.png[link="https://en.wikipedia.org/wiki/Docker_(software)",window=_blank]
-* Ansible image:link_icon_16.png[link="https://en.wikipedia.org/wiki/Ansible_(software)",window=_blank]
-* NodeJS  image:link_icon_16.png[link="https://en.wikipedia.org/wiki/Node.js",window=_blank]
-* VueJS   image:link_icon_16.png[link="https://en.wikipedia.org/wiki/Vue.js",window=_blank]
-* Redis   image:link_icon_16.png[link="https://en.wikipedia.org/wiki/Redis",window=_blank]
-* MongoDB image:link_icon_16.png[link="https://en.wikipedia.org/wiki/MongoDB",window=_blank]
+* Docker   image:./link_icon_16.png[link="https://en.wikipedia.org/wiki/Docker_(software)",window=_blank]
+* Ansible image:./link_icon_16.png[link="https://en.wikipedia.org/wiki/Ansible_(software)",window=_blank]
+* NodeJS  image:./link_icon_16.png[link="https://en.wikipedia.org/wiki/Node.js",window=_blank]
+* VueJS   image:./link_icon_16.png[link="https://en.wikipedia.org/wiki/Vue.js",window=_blank]
+* Redis   image:./link_icon_16.png[link="https://en.wikipedia.org/wiki/Redis",window=_blank]
+* MongoDB image:./link_icon_16.png[link="https://en.wikipedia.org/wiki/MongoDB",window=_blank]
 
 ****
 
diff --git a/courses/main.adoc.pdf b/courses/main.adoc.pdf
index 4954237..443f46d 100644
--- a/courses/main.adoc.pdf
+++ b/courses/main.adoc.pdf
@@ -6,8 +6,8 @@
 /Keywords (Dockerfile)
 /Creator (Asciidoctor PDF 1.5.0.beta.5, based on Prawn 2.2.2)
 /Producer (Apostolos rootApostolos@swarmlab.io)
-/ModDate (D:20210311230902+00'00')
-/CreationDate (D:20210312083119+00'00')
+/ModDate (D:20210312083432+00'00')
+/CreationDate (D:20210312083445+00'00')
 >>
 endobj
 2 0 obj