diff --git a/cmake-fix-ruby-test.patch b/cmake-fix-ruby-test.patch
index 3ddf18d..8731ab9 100644
--- a/cmake-fix-ruby-test.patch
+++ b/cmake-fix-ruby-test.patch
@@ -7,7 +7,7 @@ Index: cmake-2.8.8/Modules/FindRuby.cmake
  
     # vendor_ruby available ?
 -   EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -r vendor-specific -e "print 'true'"
-+   EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -e "print 'true' unless Config::CONFIG['vendorarchdir'].blank?"
++   EXECUTE_PROCESS(COMMAND ${RUBY_EXECUTABLE} -e "print 'true' unless Config::CONFIG['vendorarchdir'].nil?"
        OUTPUT_VARIABLE RUBY_HAS_VENDOR_RUBY  ERROR_QUIET)
  
     IF(RUBY_HAS_VENDOR_RUBY)