diff --git a/application/language/en-GB/sales_lang.php b/application/language/en-GB/sales_lang.php
index cb86900ff..a106e54da 100644
--- a/application/language/en-GB/sales_lang.php
+++ b/application/language/en-GB/sales_lang.php
@@ -108,6 +108,7 @@ $lang["sales_quote_number_duplicate"] = "Quote Number must be unique";
 $lang["sales_quote_sent"] = "Quote sent to";
 $lang["sales_quote_unsent"] = "Quote failed to be sent to";
 $lang["sales_receipt"] = "Sales Receipt";
+$lang["sales_receipt_no_email"] = "This customer does not have a valid email address";
 $lang["sales_receipt_number"] = "Sale #";
 $lang["sales_receipt_sent"] = "Receipt sent to";
 $lang["sales_receipt_unsent"] = "Receipt failed to be sent to";
diff --git a/application/language/en-US/sales_lang.php b/application/language/en-US/sales_lang.php
index 7030eb1db..dbb549a52 100644
--- a/application/language/en-US/sales_lang.php
+++ b/application/language/en-US/sales_lang.php
@@ -69,7 +69,7 @@ $lang["sales_invoice"] = "Invoice";
 $lang["sales_invoice_confirm"] = "This invoice will be sent to";
 $lang["sales_invoice_enable"] = "Create Invoice";
 $lang["sales_invoice_filter"] = "Invoices";
-$lang["sales_invoice_no_email"] = "This customer does not have a valid email address";
+$lang["sales_invoice_no_email"] = "This customer does not have a valid email address.";
 $lang["sales_invoice_number"] = "Invoice #";
 $lang["sales_invoice_number_duplicate"] = "Invoice Number must be unique.";
 $lang["sales_invoice_sent"] = "Invoice sent to";
@@ -108,6 +108,7 @@ $lang["sales_quote_number_duplicate"] = "Quote Number must be unique.";
 $lang["sales_quote_sent"] = "Quote sent to";
 $lang["sales_quote_unsent"] = "Quote failed to be sent to";
 $lang["sales_receipt"] = "Sales Receipt";
+$lang["sales_receipt_no_email"] = "This customer does not have a valid email address.";
 $lang["sales_receipt_number"] = "Sale #";
 $lang["sales_receipt_sent"] = "Receipt sent to";
 $lang["sales_receipt_unsent"] = "Receipt failed to be sent to";