diff --git a/tree/.gitconfig b/tree/.gitconfig
index cbfea47..b06213d 100644
--- a/tree/.gitconfig
+++ b/tree/.gitconfig
@@ -21,5 +21,8 @@
 	reflog = delta
 	show = delta
 
+[diff]
+	external = difft
+
 [interactive]
 	diffFilter = delta --color-only