FIX: Add missing string.

FIX: Add missing string.

diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index 720b8aa..26bcd49 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -36,6 +36,7 @@ en:
         status_disabled_other: "This user did not enable encryption and cannot receive encrypted messages."
 
         passphrase_label: "Passphrase:"
+        passphrase_invalid: "The passphrase you entered is incorrect."
 
         import_key: "I already have an encryption key."

GitHub sha: eb0afcce