diff --git a/etc/defaults.conf b/etc/defaults.conf
index 7b8f953119..ad873a8d56 100644
--- a/etc/defaults.conf
+++ b/etc/defaults.conf
@@ -97,11 +97,6 @@ XBPS_SUCMD="sudo /bin/sh -c"
 #
 #XBPS_DEBUG_PKGS=yes
 
-# [OPTIONAL]
-# Generate repository binary diffs (deltas) via xdelta3.
-#
-#XBPS_REPO_DELTAS=yes
-
 # [OPTIONAL]
 # Enable or disable global package build options, these options apply
 # to all packages that support the matching options.