diff --git a/patchfile.gemspec b/patchfile.gemspec
index bb2dcb0..819d5f5 100644
--- a/patchfile.gemspec
+++ b/patchfile.gemspec
@@ -77,7 +77,7 @@ if bundle_update_flag
 				rescue ScriptError => e
 					system('gem install nokogiri -v 1.7.0.1')
 					gem_home = ENV["GEM_HOME"]
-					if !gem_home.blank?
+					if !gem_home.nil?
 						$LOAD_PATH << "#{gem_home}/gems/nokogiri-1.7.0.1/lib"
 						$LOAD_PATH << "#{gem_home}/extensions/#{RUBY_PLATFORM}/#{RUBY_VERSION}/nokogiri-1.7.0.1"
 						require 'nokogiri'