diff -Nrup a/Modules/FindRuby.cmake b/Modules/FindRuby.cmake
--- a/Modules/FindRuby.cmake	2014-01-16 12:15:08.000000000 -0500
+++ b/Modules/FindRuby.cmake	2016-03-02 16:10:18.242811297 -0500
@@ -101,14 +101,8 @@ if(RUBY_EXECUTABLE  AND NOT  RUBY_VERSIO
    _RUBY_CONFIG_VAR("sitearchdir" RUBY_SITEARCH_DIR)
    _RUBY_CONFIG_VAR("sitelibdir" RUBY_SITELIB_DIR)
 
-   # vendor_ruby available ?
-   execute_process(COMMAND ${RUBY_EXECUTABLE} -r vendor-specific -e "print 'true'"
-      OUTPUT_VARIABLE RUBY_HAS_VENDOR_RUBY  ERROR_QUIET)
-
-   if(RUBY_HAS_VENDOR_RUBY)
-      _RUBY_CONFIG_VAR("vendorlibdir" RUBY_VENDORLIB_DIR)
-      _RUBY_CONFIG_VAR("vendorarchdir" RUBY_VENDORARCH_DIR)
-   endif()
+   _RUBY_CONFIG_VAR("vendorlibdir" RUBY_VENDORLIB_DIR)
+   _RUBY_CONFIG_VAR("vendorarchdir" RUBY_VENDORARCH_DIR)
 
    # save the results in the cache so we don't have to run ruby the next time again
    set(RUBY_VERSION_MAJOR    ${RUBY_VERSION_MAJOR}    CACHE PATH "The Ruby major version" FORCE)