diff --git a/README.md b/README.md
index 6270b8f0c..45e86cb5d 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ Supplemental software and/or configurations can be installed in 3 ways on SafeSc
 - using "SafeScale `Feature`", that can be seen as the "ansible" for SafeScale:
 
   ```
-  $ safescale cluster feature add mycluster keycloak
+  $ safescale cluster feature add mycluster ntpclient
   ```
 - and using ansible, which is the PREFERRED method to install your software in a SafeScale cluster:
   installing a simple script:
@@ -113,7 +113,6 @@ A `Feature` can describe operations using different methods:
 
 Additionally, a `Feature` is able to apply:
 - reverse proxy rules
-- Security Group rules
 
 ## Available features
 SafeScale is currently under active development and does not yet offer all the abilities planned. However, we are already publishing it with the following ones:
@@ -155,7 +154,7 @@ As much as possible, try following these guides:
 - [Go style guide](https://github.com/golang/go/wiki/CodeReviewComments)
 - [Effective Go](https://golang.org/doc/effective_go)
 
-For bugs and feature requests, [please create an issue](../../issues/new).
+For bugs and feature requests, [please create an issue](https://github.com/CS-SI/SafeScale/issues/new/choose).
 
 ## Build
   [See Build file](doc/build/BUILDING.md)
diff --git a/doc/USAGE.md b/doc/USAGE.md
index 12676cfc7..e5186ca75 100644
--- a/doc/USAGE.md
+++ b/doc/USAGE.md
@@ -1196,11 +1196,6 @@ The following actions are proposed:
   "status": "success"
 }
       </pre>
-      response on failure:
-      <pre>
-{
-  "error":
-      </pre>
   </td>
 </tr>
 <tr>
@@ -1230,11 +1225,6 @@ The following actions are proposed:
   "status":"success"
 }
       </pre>
-      response on failure:
-      <pre>
-{
-  "error": {
-      </pre>
   </td>
 </tr>
 </tbody>