diff --git a/L10n/en.template b/L10n/en.template
index 11ed447a..4ccf2c6d 100644
--- a/L10n/en.template
+++ b/L10n/en.template
@@ -230,6 +230,9 @@
 /* Section heading in settings. [prefs.py] */
 "File location" = "File location";
 
+/* Failures to access Frontier CAPI endpoints [companion.py] */
+"Frontier CAPI query failure" = "Frontier CAPI query failure";
+
 /* CQC rank. [stats.py] */
 "Gladiator" = "Gladiator";
 
diff --git a/companion.py b/companion.py
index 4898cd84..79858b90 100644
--- a/companion.py
+++ b/companion.py
@@ -541,7 +541,7 @@ class Session(object):
 
         except Exception as e:
             logger.debug('Attempting GET', exc_info=e)
-            raise ServerError(f'Frontier CAPI query failure: {endpoint}') from e
+            raise ServerError(f'{_("Frontier CAPI query failure")}: {endpoint}') from e
 
         if r.url.startswith(SERVER_AUTH):
             logger.info('Redirected back to Auth Server')