diff --git a/src/onedb/local/4.90.0_to_5.3.80.rb b/src/onedb/local/4.90.0_to_5.3.80.rb
index 87a58cb4ca..d8b17bf55f 100644
--- a/src/onedb/local/4.90.0_to_5.3.80.rb
+++ b/src/onedb/local/4.90.0_to_5.3.80.rb
@@ -101,7 +101,7 @@ module Migrator
     ############################################################################
     def feature_5005
         @db.run "ALTER TABLE vm_pool RENAME TO old_vm_pool;"
-        @db.run host_pool_schema()
+        @db.run vm_pool_schema()
 
         @db.transaction do
             @db.fetch("SELECT * FROM old_vm_pool") do |row|
@@ -110,7 +110,7 @@ module Migrator
                   c.default_xml.noblanks
                 }
 
-                doc.root.xpath(HISTORY_RECORDS/HISTORY).each do |h|
+                doc.root.xpath("HISTORY_RECORDS/HISTORY").each do |h|
                     reason = h.xpath("REASON")
                     reason.unlink if !reason.nil?
 
@@ -127,8 +127,8 @@ module Migrator
 
                 @db[:vm_pool].insert(row)
             end
+        end
 
-          end
         @db.run "DROP TABLE old_vm_pool;"
     end
 end
diff --git a/src/onedb/onedb.rb b/src/onedb/onedb.rb
index 05374d8a75..989deee383 100644
--- a/src/onedb/onedb.rb
+++ b/src/onedb/onedb.rb
@@ -35,10 +35,10 @@ class OneDB
             @backend = BackEndSQLite.new(ops[:sqlite])
         elsif ops[:backend] == :mysql
             begin
-                require 'mysql'
+                require 'mysql2'
             rescue LoadError
-                STDERR.puts "Ruby gem mysql is needed for this operation:"
-                STDERR.puts "  $ sudo gem install mysql"
+                STDERR.puts "Ruby gem mysql2 is needed for this operation:"
+                STDERR.puts "  $ sudo gem install mysql2"
                 exit -1
             end
 
diff --git a/src/onedb/onedb_backend.rb b/src/onedb/onedb_backend.rb
index d05d2292fb..d30f1cbacb 100644
--- a/src/onedb/onedb_backend.rb
+++ b/src/onedb/onedb_backend.rb
@@ -272,7 +272,7 @@ class BackEndMySQL < OneDBBacKEnd
     def connect_db
         passwd = CGI.escape(@passwd)
 
-        endpoint = "mysql://#{@user}:#{passwd}@#{@server}:#{@port}/#{@db_name}"
+        endpoint = "mysql2://#{@user}:#{passwd}@#{@server}:#{@port}/#{@db_name}"
 
         begin
             @db = Sequel.connect(endpoint)