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