diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index f84a0c972c8..e1606a36f3f 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -71,8 +71,8 @@ AntiVirusCommandExample = Example for ClamWin: c:\Program Files (x86)\ClamWin\bi
 AntiVirusParam = More parameters on command line
 AntiVirusParamExample = Example for ClamWin: --database="C:\Program Files (x86)\ClamWin\lib"
 ComptaSetup=Accounting module setup
-UserSetup=Users' management setup
-MenuSetup=Menus' management setup
+UserSetup=User's management setup
+MenuSetup=Menu's management setup
 MenuLimits=Limits and accuracy
 MenuIdParent=Parent menu ID
 DetailMenuIdParent=ID of parent menu (0 for a top menu)
@@ -275,53 +275,53 @@ ExampleOfDirectoriesForModelGen=Examples of syntax:<br>c:\mydir<br>/home/mydir<b
 Module0Name=Users & groups
 Module0Desc=Users and groups management
 Module1Name=Third parties
-Module1Desc=Companies and contacts' management
+Module1Desc=Companies and contact's management
 Module2Name=Commercial
 Module2Desc=Commercial management
 Module10Name=Accounting
 Module10Desc=Simple accounting management (invoice and payment dispatching)
 Module20Name=Proposals
-Module20Desc=Commercial proposals' management
+Module20Desc=Commercial proposal's management
 Module22Name=Mass E-mailings
-Module22Desc=Mass E-mailings' management
+Module22Desc=Mass E-mailing's management
 Module23Name = Energy
 Module23Desc = Monitoring the consumption of energies
 Module25Name=Customer Orders
-Module25Desc=Customer orders' management
+Module25Desc=Customer order's management
 Module30Name=Invoices
-Module30Desc=Invoices and credit notes' management for customers. Invoices' management for suppliers
+Module30Desc=Invoices and credit note's management for customers. Invoice's management for suppliers
 Module40Name=Suppliers
-Module40Desc=Suppliers' management and buying (orders and invoices)
+Module40Desc=Supplier's management and buying (orders and invoices)
 Module42Name=Syslog
 Module42Desc=Logging facilities (syslog)
 Module49Name=Editors
-Module49Desc=Editors' management
+Module49Desc=Editor's management
 Module50Name=Products
-Module50Desc=Products' management
+Module50Desc=Product's management
 Module51Name=Mass mailings
-Module51Desc=Mass paper mailings' management
+Module51Desc=Mass paper mailing's management
 Module52Name=Stocks
-Module52Desc=Stocks' management of products
+Module52Desc=Stock's management of products
 Module53Name=Services
-Module53Desc=Services' management
+Module53Desc=Service's management
 Module54Name=Contracts
-Module54Desc=Contracts' and services' management
+Module54Desc=Contract's and service's management
 Module55Name=Barcodes
-Module55Desc=Barcodes' management
+Module55Desc=Barcode's management
 Module56Name=Telephony
 Module56Desc=Telephony integration
 Module57Name=Standing orders
-Module57Desc=Standing orders and withdrawals' management
+Module57Desc=Standing orders and withdrawal's management
 Module58Name=ClickToDial
 Module58Desc=ClickToDial integration
 Module59Name=Bookmark4u
 Module59Desc=Add function to generate Bookmark4u account from a Dolibarr account
 Module70Name=Interventions
-Module70Desc=Interventions' management
+Module70Desc=Intervention's management
 Module75Name=Expenses and trips notes
-Module75Desc=Expenses and trips notes' management
+Module75Desc=Expenses and trips note's management
 Module80Name=Sendings
-Module80Desc=Sendings and delivery orders' management
+Module80Desc=Sendings and delivery order's management
 Module85Name=Banks and cash
 Module85Desc=Management of bank or cash accounts
 Module200Name=LDAP
@@ -337,17 +337,17 @@ Module310Desc=Foundation members management
 Module320Name=RSS Feed
 Module320Desc=Add RSS feed inside Dolibarr screen pages
 Module330Name=Bookmarks
-Module330Desc=Bookmarks' management
+Module330Desc=Bookmark's management
 Module400Name=Projects
-Module400Desc=Projects' management inside other modules
+Module400Desc=Project's management inside other modules
 Module410Name=Webcalendar
 Module410Desc=Webcalendar integration
 Module500Name=Taxes, social contributions and dividends
-Module500Desc=Taxes and social contributions' management
+Module500Desc=Taxes and social contribution's management
 Module600Name=Notifications
 Module600Desc=Send notifications by email on some Dolibarr business events to third party's contacts
 Module700Name=Donations
-Module700Desc=Donations' management
+Module700Desc=Donation's management
 Module800Name=OSCommerce by direct database access
 Module800Desc=Interface to show an OSCommerce or OSCSS shop via direct database access
 Module900Name=OSCommerce by WS
@@ -357,13 +357,13 @@ Module1200Desc=Mantis integration
 Module1400Name=Accounting
 Module1400Desc=Accounting management (double parties)
 Module1780Name=Categories
-Module1780Desc=Categories' management (products, suppliers and customers)
+Module1780Desc=Categorie's management (products, suppliers and customers)
 Module2000Name = Fckeditor
 Module2000Desc = WYSIWYG Editor
 Module2200Name=Lending rights
 Module2200Desc=Lending rights management
 Module2300Name=Menus
-Module2300Desc=Menus' management
+Module2300Desc=Menu's management
 Module2400Name=Agenda
 Module2400Desc=Actions/tasks and agenda management
 Module2500Name=Electronic Content Management
@@ -847,7 +847,7 @@ UseOptionLineIfNoQuantity=A line of product/service with a zero amount is consid
 FreeLegalTextOnProposal=Free text on commercial proposals
 WatermarkOnDraftProposal=Watermark on draft commercial proposals (any if empty)
 ##### Orders #####
-OrdersSetup=Orders' management setup
+OrdersSetup=Order's management setup
 OrdersNumberingModules=Orders numbering modules
 OrdersModelModule=Order documents models
 HideTreadedOrders=Hide the treated or canceled orders in the list
@@ -915,7 +915,7 @@ LDAPDnMemberActive=Members' synchronization
 LDAPDnMemberActiveExample=Activated/Unactivated synchronization
 LDAPContactDn=Dolibarr contacts' DN
 LDAPContactDnExample=Complete DN (ex: ou=contacts,dc=society,dc=com)
-LDAPMemberDn=Dolibarr members' DN
+LDAPMemberDn=Dolibarr member's DN
 LDAPMemberDnExample=Complete DN (ex: ou=members,dc=society,dc=com)
 LDAPMemberObjectClassList=List of objectClass
 LDAPMemberObjectClassListExample=List of objectClass defining record attributes (ex: top,inetOrgPerson or top,user for active directory)
@@ -1063,10 +1063,10 @@ DeliveryOrderModel=Products deliveries receipt model
 DeliveriesOrderAbility=Support products deliveries receipts
 ##### FCKeditor #####
 ActivateFCKeditor=Activate FCKeditor for:
-FCKeditorForUsers=WYSIWIG creation/edition of users' description and note
-FCKeditorForCompany=WYSIWIG creation/edition of companies' description and note
-FCKeditorForProduct=WYSIWIG creation/edition of products/services' description and note
-FCKeditorForMembers=WYSIWIG creation/edition of members' description and note
+FCKeditorForUsers=WYSIWIG creation/edition of user's description and note
+FCKeditorForCompany=WYSIWIG creation/edition of companie's description and note
+FCKeditorForProduct=WYSIWIG creation/edition of products/service's description and note
+FCKeditorForMembers=WYSIWIG creation/edition of member's description and note
 FCKeditorForProductDetails=WYSIWIG creation/edition of products details lines for all entities (proposals, orders, invoices, etc...)<br>Warning: Using this option is seriously not recommanded as it can create problems with special characters and page formating when building PDF files.
 FCKeditorForProductDetailsPerso=WYSIWIG creation/edition of products personalized details lines for all entities (proposals, orders, invoices, etc...)
 FCKeditorForMailing=WYSIWIG creation/edition of mailings