--- a/browser/extensions/formautofill/locales/en-US/formautofill.properties
+++ b/browser/extensions/formautofill/locales/en-US/formautofill.properties
@@ -59,17 +59,17 @@ fieldNameSeparator = ,\u0020
 # LOCALIZATION NOTE (phishingWarningMessage, phishingWarningMessage2): The warning
 # text that is displayed for informing users what categories are about to be filled.
 # "%S" will be replaced with a list generated from the pre-defined categories.
 # The text would be e.g. Also autofills company, phone, email.
 phishingWarningMessage = Also autofills %S
 phishingWarningMessage2 = Autofills %S
 # LOCALIZATION NOTE (insecureFieldWarningDescription): %S is brandShortName. This string is used in drop down
 # suggestion when users try to autofill credit card on an insecure website (without https).
-insecureFieldWarningDescription = %S has detected an insecure site. Form Autofill is temporarily disabled
+insecureFieldWarningDescription = %S has detected an insecure site. Form Autofill is temporarily disabled.
 
 # LOCALIZATION NOTE (autofillAddressesCheckbox): Label for the checkbox that enables autofilling addresses.
 autofillAddressesCheckbox = Autofill addresses
 # LOCALIZATION NOTE (learnMoreLabel): Label for the link that leads users to the Form Autofill SUMO page.
 learnMoreLabel = Learn more
 # LOCALIZATION NOTE (savedAddressesBtnLabel): Label for the button that opens a dialog that shows the
 # list of saved addresses.
 savedAddressesBtnLabel = Saved Addresses…