diff --git a/app_update.md b/app_update.md
index afbf665c..d899c9c7 100644
--- a/app_update.md
+++ b/app_update.md
@@ -2,7 +2,7 @@
 
 Once you installed applications, you may need to updgrade them, sooner or later. 
 
-** Attention : ** Please be advised to backup your databases (using phpmyadmin application for example) and files before any upgrade.
+** Caution: ** please be advised to backup your databases (using phpmyadmin application for example) and files before any upgrade.
 
 ### Upgrade using the admin panel
 Go to Tools > Update system
@@ -14,16 +14,16 @@ First, connect to your server through SSH and type in the following command (Wor
 ```bash
 yunohost app upgrade wordpress
 ```
-** Note : ** In case you have multiple instances of the same type (ex : 2 wordpress) installed, you will need to specify the instance name (ex : wordpress ou wordpress__2 ).
+** Note: ** in case you have multiple instances of the same type (ex: 2 wordpress) installed, you will need to specify the instance name (ex: wordpress ou wordpress__2).
 
 #### Upgrade an unofficial application
-Spcify the git repository containing the updgrade. 
+Spcify the git repository containing the upgrade. 
 
-FOr example, to upgrade LimeSurvey :
+For intance, to upgrade LimeSurvey:
 ```bash
 yunohost app upgrade limesurvey -u https://github.com/zamentur/limesurvey_ynh
 ```
 
-** Note : ** Be cautious when installing unofficial applications and upgrades. Be sure that theses updates are stables and are not a step in the development process. There may be a good reason if an application is not listed in the official repository.
+** Note: ** be cautious when installing unofficial applications and upgrades. Be sure that theses updates are stables and are not a step in the development process. There may be a good reason if an application is not listed in the official repository.
 
-** Attention : ** Be sure to check the content of any update ; installing or upgrading an unofficial application allows it to run scripts with the highest privileges.
+** Caution: ** be sure to check the content of any update; installing or upgrading an unofficial application allows it to run scripts with the highest privileges.