diff --git a/htdocs/langs/en_US/companies.lang b/htdocs/langs/en_US/companies.lang
index f195da762a8..aec9c1e1a93 100644
--- a/htdocs/langs/en_US/companies.lang
+++ b/htdocs/langs/en_US/companies.lang
@@ -389,8 +389,8 @@ NoDolibarrAccess=No Dolibarr access
 ExportDataset_company_1=Third parties (Companies / foundations / physical people) and properties
 ExportDataset_company_2=Contacts and properties
 ImportDataset_company_1=Third parties (Companies / foundations / physical people) and properties
-ImportDataset_company_2=Contacts/Addresses (of thirdparties or not) and attributes
-ImportDataset_company_3=Bank accounts of thirdparties
+ImportDataset_company_2=Contacts/Addresses (of third parties or not) and attributes
+ImportDataset_company_3=Bank accounts of third parties
 ImportDataset_company_4=Third parties/Sales representatives (Assign sales representatives users to companies)
 PriceLevel=Price level
 DeliveryAddress=Delivery address
@@ -425,9 +425,9 @@ ManagingDirectors=Manager(s) name (CEO, director, president...)
 MergeOriginThirdparty=Duplicate third party (third party you want to delete)
 MergeThirdparties=Merge third parties
 ConfirmMergeThirdparties=Are you sure you want to merge this third party into the current one? All linked objects (invoices, orders, ...) will be moved to current third party, then the thirdparty will be deleted.
-ThirdpartiesMergeSuccess=Thirdparties have been merged
+ThirdpartiesMergeSuccess=Third parties have been merged
 SaleRepresentativeLogin=Login of sales representative
 SaleRepresentativeFirstname=First name of sales representative
 SaleRepresentativeLastname=Last name of sales representative
-ErrorThirdpartiesMerge=There was an error when deleting the thirdparties. Please check the log. Changes have been reverted.
+ErrorThirdpartiesMerge=There was an error when deleting the third parties. Please check the log. Changes have been reverted.
 NewCustomerSupplierCodeProposed=New customer or supplier code suggested on duplicate code
diff --git a/htdocs/langs/en_US/mails.lang b/htdocs/langs/en_US/mails.lang
index 8e2b093fdc2..3c512ca7286 100644
--- a/htdocs/langs/en_US/mails.lang
+++ b/htdocs/langs/en_US/mails.lang
@@ -135,7 +135,7 @@ NbOfTargetedContacts=Current number of targeted contact emails
 UseFormatFileEmailToTarget=Imported file must have format <strong>email;name;firstname;other</strong>
 UseFormatInputEmailToTarget=Enter a string with format <strong>email;name;firstname;other</strong>
 MailAdvTargetRecipients=Recipients (advanced selection)
-AdvTgtTitle=Fill input fields to preselect the thirdparties or contacts/addresses to target
+AdvTgtTitle=Fill input fields to preselect the third parties or contacts/addresses to target
 AdvTgtSearchTextHelp=Use %% as magic caracters. For exemple to find all item like <b>jean, joe, jim</b>, you can input <b>j%%</b>, you can also use ; as separator for value, and use ! for except this value. For exemple  <b>jean;joe;jim%%;!jimo;!jima%</b> will target all jean, joe, start with jim but not jimo and not everythnig taht start by jima 
 AdvTgtSearchIntHelp=Use interval to select int or float value
 AdvTgtMinVal=Minimum value
diff --git a/htdocs/langs/en_US/main.lang b/htdocs/langs/en_US/main.lang
index c1027e20466..52dd0aba17e 100644
--- a/htdocs/langs/en_US/main.lang
+++ b/htdocs/langs/en_US/main.lang
@@ -904,7 +904,7 @@ Select2MoreCharacters=or more characters
 Select2MoreCharactersMore=<strong>Search syntax:</strong><br><kbd><strong> |</strong></kbd><kbd> OR</kbd> (a|b)<br><kbd><strong>*</strong></kbd><kbd> Any character</kbd> (a*b)<br><kbd><strong>^</strong></kbd><kbd> Start with</kbd> (^ab)<br><kbd><strong>$</strong></kbd><kbd> End with</kbd> (ab$)<br>
 Select2LoadingMoreResults=Loading more results...
 Select2SearchInProgress=Search in progress...
-SearchIntoThirdparties=Thirdparties
+SearchIntoThirdparties=Third parties
 SearchIntoContacts=Contacts
 SearchIntoMembers=Members
 SearchIntoUsers=Users
diff --git a/htdocs/langs/en_US/margins.lang b/htdocs/langs/en_US/margins.lang
index 8633d910657..8a8a9f20788 100644
--- a/htdocs/langs/en_US/margins.lang
+++ b/htdocs/langs/en_US/margins.lang
@@ -41,4 +41,4 @@ rateMustBeNumeric=Rate must be a numeric value
 markRateShouldBeLesserThan100=Mark rate should be lower than 100
 ShowMarginInfos=Show margin infos
 CheckMargins=Margins detail
-MarginPerSaleRepresentativeWarning=The report of margin per user use the link between thirdparties and sale representatives to calculate the margin of each salerepresentaive. Because some thirdparties may not have any ddiated sale representative and some thirdparties may be linked to several, some amounts may not be included into this report (if there is no sale representative) and some may appear on different lines (for each sale representative).
+MarginPerSaleRepresentativeWarning=The report of margin per user use the link between third parties and sale representatives to calculate the margin of each salerepresentaive. Because some thirdparties may not have any ddiated sale representative and some thirdparties may be linked to several, some amounts may not be included into this report (if there is no sale representative) and some may appear on different lines (for each sale representative).
diff --git a/htdocs/langs/en_US/ticketsup.lang b/htdocs/langs/en_US/ticketsup.lang
index 60f98a8e543..cabf1c39ec3 100644
--- a/htdocs/langs/en_US/ticketsup.lang
+++ b/htdocs/langs/en_US/ticketsup.lang
@@ -25,7 +25,7 @@ Permission56001=See tickets
 Permission56002=Modify tickets
 Permission56003=Delete tickets
 Permission56004=Manage tickets
-Permission56005=See tickets of all thirdparties (not effective for external users, always be limited to the thirdparty they depend on)
+Permission56005=See tickets of all third parties (not effective for external users, always be limited to the thirdparty they depend on)
 
 TicketsupDictType=Tickets type
 TicketsupDictCategory=Tickets categories