diff --git a/nix/moonythm.nix b/nix/moonythm.nix
index c2aea0c..ac17049 100644
--- a/nix/moonythm.nix
+++ b/nix/moonythm.nix
@@ -7,7 +7,7 @@ runCommand "moonythm" { } ''
 
   cd ${../.}
 
-  export MOONYTHM_BASE_URL "https://moonythm.dev"
-  export MOONYTHM_OUT_DIR  "$out"
+  export MOONYTHM_BASE_URL="https://moonythm.dev"
+  export MOONYTHM_OUT_DIR="$out"
   ${moonythm-generator}/bin/moonythm
 ''