diff --git a/conf/hm3.sample.ini b/conf/hm3.sample.ini
index 826b5cc..76c5cf9 100644
--- a/conf/hm3.sample.ini
+++ b/conf/hm3.sample.ini
@@ -716,7 +716,7 @@ modules[]=keyboard_shortcuts
 ; Sieve Filters
 ; ------------------
 ; Enables configurable Sieve based IMAP filters
-; modules[]=sievefilters
+modules[]=sievefilters
 
 ; Site
 ; ----