diff --git a/personal_diploma.gemspec b/personal_diploma.gemspec
index c46fc14..de97071 100644
--- a/personal_diploma.gemspec
+++ b/personal_diploma.gemspec
@@ -7,7 +7,7 @@ template_path = ENV['PWD'] + '/app/templates'
 all_template = Dir.glob(template_path+'/*/')
 puts 'copying module'
 all_template.each do |folder|
-    if folder[0...-1] != 'mobile'
+    if folder[0..-1] != 'mobile'
         begin 
             system ('cp -r '+ app_path + '/modules/ ' + folder)
         rescue