diff --git a/src/modules/config.js b/src/modules/config.js
index 4b00c1b4d1..1129363b8e 100644
--- a/src/modules/config.js
+++ b/src/modules/config.js
@@ -104,7 +104,7 @@ export const defaultState = {
   useAtIcon: undefined, // instance default
   mentionLinkDisplay: undefined, // instance default
   mentionLinkShowTooltip: undefined, // instance default
-  mentionLinkShowAvatar: undefined, // instance default
+  mentionLinkShowAvatar: true, // instance default
   mentionLinkFadeDomain: undefined, // instance default
   mentionLinkShowYous: true, // instance default
   mentionLinkBoldenYou: undefined, // instance default