diff --git a/flake.nix b/flake.nix
index e571682..d432709 100644
--- a/flake.nix
+++ b/flake.nix
@@ -31,8 +31,8 @@
             ${input}.tex
         '';
         installPhase = ''
-        mkdir -p $out
-        cp ${input}.pdf $out/
+          mkdir -p $out
+          cp ${input}.pdf $out/
         '';
       };
       default = document;