diff --git a/htdocs/accountancy/admin/categories_list.php b/htdocs/accountancy/admin/categories_list.php
index c61674921f1..68128630deb 100644
--- a/htdocs/accountancy/admin/categories_list.php
+++ b/htdocs/accountancy/admin/categories_list.php
@@ -247,7 +247,7 @@ if (GETPOST('actionadd', 'alpha') || GETPOST('actionmodify', 'alpha')) {
 			if ($_POST[$listfieldvalue[$i]] == '' && !$listfieldvalue[$i] == 'formula') {
 				$sql .= "null"; // For vat, we want/accept code = ''
 			} else {
-				$sql .= "'".$db->escape($_POST[$listfieldvalue[$i]])."'";
+				$sql .= "'".$db->escape(GETPOST($listfieldvalue[$i]))."'";
 			}
 			$i++;
 		}
diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index 857ef41bbc2..202f11f7f46 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -1977,7 +1977,7 @@ MAIN_PDF_MARGIN_BOTTOM=Bottom margin on PDF
 MAIN_DOCUMENTS_LOGO_HEIGHT=Height for logo on PDF
 NothingToSetup=There is no specific setup required for this module.
 SetToYesIfGroupIsComputationOfOtherGroups=Set this to yes if this group is a computation of other groups
-EnterCalculationRuleIfPreviousFieldIsYes=Enter calculation rule if previous field was set to Yes (For example 'CODEGRP1+CODEGRP2')
+EnterCalculationRuleIfPreviousFieldIsYes=Enter calculation rule if previous field was set to Yes.<br>For example:<br>CODEGRP1+CODEGRP2
 SeveralLangugeVariatFound=Several language variants found
 RemoveSpecialChars=Remove special characters
 COMPANY_AQUARIUM_CLEAN_REGEX=Regex filter to clean value (COMPANY_AQUARIUM_CLEAN_REGEX)