diff --git a/bookwyrm.nix b/bookwyrm.nix
index 19ed064..adb287a 100644
--- a/bookwyrm.nix
+++ b/bookwyrm.nix
@@ -98,7 +98,7 @@ mkDerivation {
 
 		# Executables
 
-		cat << EOF > $out/bin/bookwyrm
+		cat <<- EOF > $out/bin/bookwyrm
 			#!/run/current-system/sw/bin/sh
 
 			export PYTHONPATH="$out/lib/python3.11/site-packages"