diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index 530216d2bae..9074c85c2d6 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -75,8 +75,8 @@ AntiVirusCommandExample= Example for ClamWin: c:\Progra~1\ClamWin\bin\clamscan.e
 AntiVirusParam= More parameters on command line
 AntiVirusParamExample= Example for ClamWin: --database="C:\Program Files (x86)\ClamWin\lib"
 ComptaSetup=Accounting module setup
-UserSetup=User's management setup
-MenuSetup=Menu's management setup
+UserSetup=User management setup
+MenuSetup=Menu management setup
 MenuLimits=Limits and accuracy
 MenuIdParent=Parent menu ID
 DetailMenuIdParent=ID of parent menu (0 for a top menu)
@@ -216,7 +216,7 @@ OfficialWiki=Dolibarr documentation on Wiki
 OfficialDemo=Dolibarr online demo
 OfficialMarketPlace=Official market place for external modules/addons
 OfficialWebHostingService=Official web hosting service (Cloud hosting)
-ForDocumentationSeeWiki=For user's or developer's documentation (Doc, FAQs...),<br>take a look at the Dolibarr Wiki:<br><b><a href="%s" target="_blank">%s</a></b>
+ForDocumentationSeeWiki=For user or developer documentation (Doc, FAQs...),<br>take a look at the Dolibarr Wiki:<br><b><a href="%s" target="_blank">%s</a></b>
 ForAnswersSeeForum=For any other questions/help, you can use the Dolibarr forum:<br><b><a href="%s" target="_blank">%s</a></b>
 HelpCenterDesc1=This area can help you to get a Help support service on Dolibarr.
 HelpCenterDesc2=Some part of this service are available in <b>english only</b>.
@@ -333,53 +333,53 @@ ButtonHideUnauthorized=Hide buttons unauthorized (instead of seeing gray)
 Module0Name=Users & groups
 Module0Desc=Users and groups management
 Module1Name=Third parties
-Module1Desc=Companies and contact's management
+Module1Desc=Companies and contact management
 Module2Name=Commercial
 Module2Desc=Commercial management
 Module10Name=Accounting
 Module10Desc=Simple accounting management (invoice and payment dispatching)
 Module20Name=Proposals
-Module20Desc=Commercial proposal's management
+Module20Desc=Commercial proposal management
 Module22Name=Mass E-mailings
-Module22Desc=Mass E-mailing's management
+Module22Desc=Mass E-mailing management
 Module23Name= Energy
 Module23Desc= Monitoring the consumption of energies
 Module25Name=Customer Orders
-Module25Desc=Customer order's management
+Module25Desc=Customer order management
 Module30Name=Invoices
-Module30Desc=Invoices and credit note's management for customers. Invoice's management for suppliers
+Module30Desc=Invoice and credit note management for customers. Invoice management for suppliers
 Module40Name=Suppliers
-Module40Desc=Supplier's management and buying (orders and invoices)
+Module40Desc=Supplier management and buying (orders and invoices)
 Module42Name=Logs
 Module42Desc=Logging facilities (file, syslog, ...)
 Module49Name=Editors
-Module49Desc=Editor's management
+Module49Desc=Editor management
 Module50Name=Products
-Module50Desc=Product's management
+Module50Desc=Product management
 Module51Name=Mass mailings
-Module51Desc=Mass paper mailing's management
+Module51Desc=Mass paper mailing management
 Module52Name=Stocks
-Module52Desc=Stock's management of products
+Module52Desc=Stock management (products)
 Module53Name=Services
-Module53Desc=Service's management
+Module53Desc=Service management
 Module54Name=Contracts
-Module54Desc=Contract's and service's management
+Module54Desc=Contract and service management
 Module55Name=Barcodes
-Module55Desc=Barcode's management
+Module55Desc=Barcode management
 Module56Name=Telephony
 Module56Desc=Telephony integration
 Module57Name=Standing orders
-Module57Desc=Standing orders and withdrawal's management
+Module57Desc=Standing orders and withdrawal management
 Module58Name=ClickToDial
 Module58Desc=Integration of a ClickToDial system (Asterisk, ...)
 Module59Name=Bookmark4u
 Module59Desc=Add function to generate Bookmark4u account from a Dolibarr account
 Module70Name=Interventions
-Module70Desc=Intervention's management
-Module75Name=Expenses and trips notes
-Module75Desc=Expenses and trips note's management
+Module70Desc=Intervention management
+Module75Name=Expense and trip notes
+Module75Desc=Expense and trip notes management
 Module80Name=Shipments
-Module80Desc=Shipments and delivery order's management
+Module80Desc=Shipments and delivery order management
 Module85Name=Banks and cash
 Module85Desc=Management of bank or cash accounts
 Module100Name=External site
@@ -399,17 +399,17 @@ Module310Desc=Foundation members management
 Module320Name=RSS Feed
 Module320Desc=Add RSS feed inside Dolibarr screen pages
 Module330Name=Bookmarks
-Module330Desc=Bookmark's management
+Module330Desc=Bookmark management
 Module400Name=Projects
-Module400Desc=Project's management inside other modules
+Module400Desc=Project management inside other modules
 Module410Name=Webcalendar
 Module410Desc=Webcalendar integration
 Module500Name=Taxes, social contributions and dividends
-Module500Desc=Taxes and social contribution's management
+Module500Desc=Taxes and social contribution management
 Module600Name=Notifications
-Module600Desc=Send notifications by email on some Dolibarr business events to third party's contacts
+Module600Desc=Send notifications by email on some Dolibarr business events to third party contacts
 Module700Name=Donations
-Module700Desc=Donation's management
+Module700Desc=Donation management
 Module800Name=OSCommerce by direct database access
 Module800Desc=Interface to show an OSCommerce or OSCSS shop via direct database access
 Module900Name=OSCommerce by WS
@@ -419,13 +419,13 @@ Module1200Desc=Mantis integration
 Module1400Name=Accounting
 Module1400Desc=Accounting management (double parties)
 Module1780Name=Categories
-Module1780Desc=Categorie's management (products, suppliers and customers)
+Module1780Desc=Category management (products, suppliers and customers)
 Module2000Name=WYSIWYG editor
 Module2000Desc=Allow to edit some text area using an advanced editor
 Module2200Name=Lending rights
 Module2200Desc=Lending rights management
 Module2300Name=Menus
-Module2300Desc=Menu's management
+Module2300Desc=Menu management
 Module2400Name=Agenda
 Module2400Desc=Events/tasks and agenda management
 Module2500Name=Electronic Content Management
@@ -493,7 +493,7 @@ Permission94=Export social contributions
 Permission95=Read reports
 Permission96=Setup dispatching
 Permission97=Read invoice accountancy dispatching
-Permission98=Dispatch invoice's accountancy lines
+Permission98=Dispatch invoice accountancy lines
 Permission101=Read sendings
 Permission102=Create/modify sendings
 Permission104=Validate sendings
@@ -612,8 +612,8 @@ Permission703=Delete donations
 Permission1001=Read stocks
 Permission1002=Create/modify stocks
 Permission1003=Delete stocks
-Permission1004=Read stock's movements
-Permission1005=Create/modify stock's movements
+Permission1004=Read stock movements
+Permission1005=Create/modify stock movements
 Permission1101=Read delivery orders
 Permission1102=Create/modify delivery orders
 Permission1104=Validate delivery orders
@@ -729,7 +729,7 @@ TableName=Table name
 TableLineFormat=Line format
 NbOfRecord=Nb of records
 Constraints=Constraints
-ConstraintsType=Constraint's type
+ConstraintsType=Constraints type
 ConstraintsToShowOrNotEntry=Constraint to show or not the menu entry
 AllMustBeOk=All of these must be checked
 Host=Server
@@ -961,7 +961,7 @@ 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=Order's management setup
+OrdersSetup=Order management setup
 OrdersNumberingModules=Orders numbering modules
 OrdersModelModule=Order documents models
 HideTreadedOrders=Hide the treated or canceled orders in the list
@@ -1033,7 +1033,7 @@ LDAPDnMemberActive=Members' synchronization
 LDAPDnMemberActiveExample=Activated/Unactivated synchronization
 LDAPContactDn=Dolibarr contacts' DN
 LDAPContactDnExample=Complete DN (ex: ou=contacts,dc=society,dc=com)
-LDAPMemberDn=Dolibarr member's DN
+LDAPMemberDn=Dolibarr members 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)
@@ -1043,13 +1043,13 @@ LDAPGroupObjectClassList=List of objectClass
 LDAPGroupObjectClassListExample=List of objectClass defining record attributes (ex: top,groupOfUniqueNames)
 LDAPContactObjectClassList=List of objectClass
 LDAPContactObjectClassListExample=List of objectClass defining record attributes (ex: top,inetOrgPerson or top,user for active directory)
-LDAPMemberTypeDn=Dolibarr member's type DN
+LDAPMemberTypeDn=Dolibarr members type DN
 LDAPMemberTypeDnExample=Complete DN (ex: ou=type_members,dc=society,dc=com)
 LDAPTestConnect=Test LDAP connection
-LDAPTestSynchroContact=Test contact's synchronization
-LDAPTestSynchroUser=Test user's synchronization
-LDAPTestSynchroGroup=Test group's synchronization
-LDAPTestSynchroMember=Test member's synchronization
+LDAPTestSynchroContact=Test contacts synchronization
+LDAPTestSynchroUser=Test user synchronization
+LDAPTestSynchroGroup=Test group synchronization
+LDAPTestSynchroMember=Test member synchronization
 LDAPSynchroOK=Synchronization test successful
 LDAPSynchroKO=Failed synchronization test
 LDAPSynchroKOMayBePermissions=Failed synchronization test. Check that connexion to server is correctly configured and allows LDAP udpates
@@ -1189,8 +1189,8 @@ FreeLegalTextOnDeliveryReceipts=Free text on delivery receipts
 ##### FCKeditor #####
 AdvancedEditor=Advanced editor
 ActivateFCKeditor=Activate advanced editor for:
-FCKeditorForCompany=WYSIWIG creation/edition of element's description and note (except products/services)
-FCKeditorForProduct=WYSIWIG creation/edition of products/service's description and note
+FCKeditorForCompany=WYSIWIG creation/edition of elements description and note (except products/services)
+FCKeditorForProduct=WYSIWIG creation/edition of products/services description and note
 FCKeditorForProductDetails=WYSIWIG creation/edition of products details lines for all entities (proposals, orders, invoices, etc...). <font class="warning">Warning: Using this option for this case is seriously not recommanded as it can create problems with special characters and page formating when building PDF files.</font>
 FCKeditorForMailing=WYSIWIG creation/edition of mailings
 ##### OSCommerce 1 #####
@@ -1309,4 +1309,4 @@ TestGeoIPResult=Test of a conversion IP -> country
 ##### Projects #####
 ProjectsNumberingModules=Projects numbering module
 ProjectsSetup=Project module setup
-ProjectsModelModule=Project's report document model
+ProjectsModelModule=Project reports document model