diff --git a/home-config/aerc/aerc.conf b/home-config/aerc/aerc.conf
index 7e65b73..9d537db 100644
--- a/home-config/aerc/aerc.conf
+++ b/home-config/aerc/aerc.conf
@@ -283,7 +283,7 @@ log-level=trace
 # (IMAP server or notmuch), threads will be built by the client.
 #
 # Default: false
-#threading-enabled=true
+threading-enabled=true
 
 # Force client-side thread building
 #