diff --git a/system/.config/custom/env b/system/.config/custom/env
index f6f76a7..71648fb 100644
--- a/system/.config/custom/env
+++ b/system/.config/custom/env
@@ -115,6 +115,7 @@ export TERMINAL="alacritty"
 export BROWSER="chromium"
 export PAGER="less"
 export MANPAGER="${PAGER}"
+export DIFFPROG="delta"
 
 # QT
 export QT_QPA_PLATFORMTHEME="qt5ct"