diff --git a/pkgs/development/lisp-modules/clwrapper/setup-hook.sh b/pkgs/development/lisp-modules/clwrapper/setup-hook.sh
index 5149d69a0d61..5cb238b2973f 100644
--- a/pkgs/development/lisp-modules/clwrapper/setup-hook.sh
+++ b/pkgs/development/lisp-modules/clwrapper/setup-hook.sh
@@ -27,7 +27,7 @@ setLisp () {
 
 collectNixLispLDLP () {
      if echo "$1/lib"/lib*.{so,dylib}* | grep . > /dev/null; then
-	 export NIX_LISP_LD_LIBRARY_PATH="${NIX_LISP_LD_LIBRARY_PATH-}${NIX_LISP_LD_LIBRARY_PATH:+:}$1/lib"
+     export NIX_LISP_LD_LIBRARY_PATH="${NIX_LISP_LD_LIBRARY_PATH-}${NIX_LISP_LD_LIBRARY_PATH:+:}$1/lib"
      fi
 }