diff --git a/.config/fish/conf.d/00-env.fish b/.config/fish/conf.d/00-env.fish
index 7bb862d..b80d0d9 100644
--- a/.config/fish/conf.d/00-env.fish
+++ b/.config/fish/conf.d/00-env.fish
@@ -3,6 +3,9 @@ if set -q MZTE_ENV_SET
 end
 set -gx MZTE_ENV_SET
 
+# mix should respect XDG standard
+export MIX_XDG=1
+
 # use clang compiler
 export CC=clang
 export CXX=clang++