diff --git a/gnu/packages/lua.scm b/gnu/packages/lua.scm
index 02467e2d96..82ea6e02de 100644
--- a/gnu/packages/lua.scm
+++ b/gnu/packages/lua.scm
@@ -210,8 +210,8 @@ language.")
              (setenv "LUA_CPATH" (string-append "src/?.so." ,version ";;"))
              (setenv "LUA_PATH"  "src/?.lua;;")
              (when (zero? (primitive-fork))
-               (system* "lua" "test/testsrvr.lua"))
-             (zero? (system* "lua" "test/testclnt.lua")))))))
+               (invoke "lua" "test/testsrvr.lua"))
+             (invoke "lua" "test/testclnt.lua"))))))
     (inputs
      `(("lua" ,lua-5.1)))
     (home-page "http://www.tecgraf.puc-rio.br/~diego/professional/luasocket/")