diff --git a/server.js b/server.js
index c8c44ca5..700bf9c0 100644
--- a/server.js
+++ b/server.js
@@ -2064,7 +2064,7 @@ ${excerpt}
             res.json({ commits, repos: [...repos], since: since.toISOString() });
         } catch (e) {
             console.error('[chronicle/activity]', e.message);
-            res.status(500).json({ error: e.message });
+            res.status(500).json({ error: 'Internal server error' });
         }
     });
 
@@ -3287,7 +3287,7 @@ ${excerpt}
 
         req2.on('error', (e) => {
             console.error('[atlas/tailscale-scan] error:', e.code, e.message);
-            res.status(500).json({ error: 'Scan error', code: e.code });
+            res.status(500).json({ error: 'Scan error' });
         });
 
         req2.end();