diff --git a/external/exchange-channels/duma.md b/external/exchange-channels/duma.md
index 36b4aff4d19ffec589af5478565db3a304bf07ec..37bec0af73b49162b9ac2fed7b42dec53fc285f7 100644
--- a/external/exchange-channels/duma.md
+++ b/external/exchange-channels/duma.md
@@ -16,7 +16,7 @@ An access link can be reached via standard web browsers. Data can be transferred
 * Through the web browser by visiting the link, which is our recommended way of data transfer, described in this [section of the guide](#DUMA_WEB)
 * Through the use of a command line tool. If your data sits in an environment, where you can not launch a web browser, then you may use use a command line client tool to reach an access link. This process is described in this [section of this guide](#DUMA_CLI).  
 
-The use of DUMA is mediated by LCSB's data stewards. If you require assistance in using DUMA, you should send an email to [LCSB admin team](lcsb-sysadmins@uni.lu).
+The use of DUMA is mediated by LCSB's data stewards. If you require assistance in using DUMA, you should send an email to [LCSB admin team](mailto:lcsb-sysadmins@uni.lu).
 
 <a name="DUMA_WEB"></a>
 ## Accessing DUMA via Web Interface
diff --git a/external/exchange-channels/owncloud.md b/external/exchange-channels/owncloud.md
index 0c86f775a40dc603420bc0f57623dcab5d349b0d..3164119216a6891069e7458594e9a73894556cf3 100644
--- a/external/exchange-channels/owncloud.md
+++ b/external/exchange-channels/owncloud.md
@@ -6,7 +6,7 @@
 
 ## Obtaining a LUMS account
 
-A LUMS (LCSB User Management System) account is needed in order to use LCSB ownCloud. LUMS accounts for LCSB staff are normally created within the first few days of starting work at the LCSB. In addition to staff, researchers at Partner Institutes may be given LUMS accounts. If you want to create a LUMS account, or require support, you should contact [LCSB admin team](lcsb-sysadmins@uni.lu).
+A LUMS (LCSB User Management System) account is needed in order to use LCSB ownCloud. LUMS accounts for LCSB staff are normally created within the first few days of starting work at the LCSB. In addition to staff, researchers at Partner Institutes may be given LUMS accounts. If you want to create a LUMS account, or require support, you should contact [LCSB admin team](mailto:lcsb-sysadmins@uni.lu).
 
 ## Using LCSB ownCloud
 
@@ -35,4 +35,3 @@ When sharing research data, one should observe the following guidance using Ownc
  **IMPORTANT NOTE: Whenever the LCSB shares an ownCloud folder with you (collaborator), the share password will be reachable via link, which will expire. Therefore you should make a record of your password once you view it.**
 
  
-