diff --git a/pkgs/development/compilers/chez-racket/shared.nix b/pkgs/development/compilers/chez-racket/shared.nix
index e9a9e42346d6..71bb710d2048 100644
--- a/pkgs/development/compilers/chez-racket/shared.nix
+++ b/pkgs/development/compilers/chez-racket/shared.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation (args // {
 
   postPatch = ''
     export ZLIB="$(find ${zlib.out}/lib -type f | sort | head -n1)"
-    export LZ4="$(find ${lz4.out}/lib -type f | sort | head -n1)"
+    export LZ4="$(find ${lz4.lib}/lib -type f | sort | head -n1)"
   '';
 
   nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin ([ cctools darwin.autoSignDarwinBinariesHook ]);