diff --git a/src/factory.c b/src/factory.c
index 96acad0e..c0db6871 100644
--- a/src/factory.c
+++ b/src/factory.c
@@ -1001,7 +1001,7 @@ void Run_script(char *scriptdir)
   luaopen_table(L);
   //luaopen_io(L); // crashes on Windows, for unknown reason
   //luaopen_os(L);
-  //luaopen_string(L);
+  luaopen_string(L);
   luaopen_math(L);
   //luaopen_debug(L);