diff --git a/libzypp/zypp.conf b/libzypp/zypp.conf
index 0927832..6cba715 100644
--- a/libzypp/zypp.conf
+++ b/libzypp/zypp.conf
@@ -199,7 +199,7 @@
 ##
 ## This option has no effect unless download.use_deltarpm is set true.
 ##
-#  download.use_deltarpm.always = false
+download.use_deltarpm.always = true
 
 ##
 ## Hint which media to prefer when installing packages (download vs. CD).