diff --git a/htdocs/langs/en_US/accountancy.lang b/htdocs/langs/en_US/accountancy.lang
index 28a77095084..22724acfc09 100644
--- a/htdocs/langs/en_US/accountancy.lang
+++ b/htdocs/langs/en_US/accountancy.lang
@@ -149,7 +149,6 @@ ACCOUNTING_SERVICE_SOLD_ACCOUNT=Accounting account by default for the sold servi
 Doctype=Type of document
 Docdate=Date
 Docref=Reference
-Code_tiers=Thirdparty
 LabelAccount=Label account
 LabelOperation=Label operation
 Sens=Sens
@@ -180,7 +179,7 @@ ProductAccountNotDefined=Account for product not defined
 FeeAccountNotDefined=Account for fee not defined
 BankAccountNotDefined=Account for bank not defined
 CustomerInvoicePayment=Payment of invoice customer
-ThirdPartyAccount=Thirdparty account
+ThirdPartyAccount=Third party account
 NewAccountingMvt=New transaction
 NumMvts=Numero of transaction
 ListeMvts=List of movements
diff --git a/htdocs/langs/en_US/main.lang b/htdocs/langs/en_US/main.lang
index 6806e648823..75240a2e378 100644
--- a/htdocs/langs/en_US/main.lang
+++ b/htdocs/langs/en_US/main.lang
@@ -897,7 +897,7 @@ 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).