diff --git a/libdnf/conf/ConfigMain.cpp b/libdnf/conf/ConfigMain.cpp
index 3f12762a..109b120d 100644
--- a/libdnf/conf/ConfigMain.cpp
+++ b/libdnf/conf/ConfigMain.cpp
@@ -361,7 +361,7 @@ class ConfigMain::Impl {
     OptionBool proxy_sslverify{true};
     OptionString proxy_sslclientcert{""};
     OptionString proxy_sslclientkey{""};
-    OptionBool deltarpm{false};
+    OptionBool deltarpm{true};
     OptionNumber<std::uint32_t> deltarpm_percentage{75};
     OptionBool skip_if_unavailable{false};
     OptionBool sslverifystatus{false};