diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index 51059ef7ff8..4a8f0bc06c2 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -36,8 +36,8 @@ GUISetup=Display
 SetupArea=Setup area
 FormToTestFileUploadForm=Form to test file upload (according to setup)
 IfModuleEnabled=Note: yes is effective only if module <b>%s</b> is enabled
-RemoveLock=Remove file <b>%s</b> if it exists to allow the update tool.
-RestoreLock=Replace a file <b>%s</b> with read permission only on file to disable any usage of update tool.
+RemoveLock=Remove file <b>%s</b> if it exists to allow usage of the update tool.
+RestoreLock=Replace file <b>%s</b>, with read permission only, to disable any usage of update tool.
 SecuritySetup=Security setup
 ErrorModuleRequirePHPVersion=Error, this module requires PHP version %s or higher
 ErrorModuleRequireDolibarrVersion=Error, this module requires Dolibarr version %s or higher
@@ -242,12 +242,12 @@ MenuHandlers=Menu handlers
 MenuAdmin=Menu editor
 ThisIsProcessToFollow=This is setup to process:
 StepNb=Step %s
-FindPackageFromWebSite=Find a package that provides feature you want (for example on web site %s).
+FindPackageFromWebSite=Find a package that provides feature you want (for example on official web site %s).
 DownloadPackageFromWebSite=Download package.
 UnpackPackageInDolibarrRoot=Unpack package file into Dolibarr's root directory <b>%s</b>
 SetupIsReadyForUse=Install is finished and Dolibarr is ready to use with this new component.
 CurrentVersion=Dolibarr current version
-CallUpdatePage=Go to the page that updates database structure and datas: %s.
+CallUpdatePage=Go to the page that updates the database structure and datas: %s.
 LastStableVersion=Last stable version
 GenericMaskCodes=You may enter any numbering mask. In this mask, the following tags could be used:<br><b>{000000}</b> corresponds to a number which will be incremented on each %s. Enter as many zeros as the desired length of the counter. The counter will be completed by zeros from the left in order to have as many zeros as the mask. <br><b>{000000+000}</b> same as previous but an offset corresponding to the number to the right of the + sign is applied starting on first %s. <br><b>{000000@x}</b> same as previous but the counter is reset to zero when month x is reached (x between 1 and 12). If this option is used and x is 2 or higher, then sequence {yy}{mm} or {yyyy}{mm} is also required. <br><b>{dd}</b> day (01 to 31).<br><b>{mm}</b> month (01 to 12).<br><b>{yy}</b>, <b>{yyyy}</b> or <b>{y}</b> year over 2, 4 or 1 numbers. <br>
 GenericMaskCodes2=<b>{cccc}</b> the client code<br><b>{cccc000}</b> the client code on n characters is followed by a client's ref counter without offset and zeroized with the global counter.<br><b>{tttt}</b> The code of company type on n characters (see dictionnary-company types).<br>