diff --git a/db/migrate/20230719080900_fix_ubuntu_versions.rb b/db/migrate/20230719080900_fix_ubuntu_versions.rb
index f58a4a32cff..786c0a9680b 100644
--- a/db/migrate/20230719080900_fix_ubuntu_versions.rb
+++ b/db/migrate/20230719080900_fix_ubuntu_versions.rb
@@ -3,11 +3,10 @@ def up
     # For every Ubuntu operating system with a set minor version we
     #   * Check if there is already an operating system present with the same major and minor version combined in the major field
     #   * If not, we update the version
-    Operatingsystem.where('name ~* :name', name: 'ubuntu')
-                    .merge(Operatingsystem.where.not(minor: [nil, ''])).each do |os|
-      if !Operatingsystem.where('name ~* :name', name: 'ubuntu').merge(Operatingsystem.where(major: "#{os.major}.#{os.minor}")).merge(Operatingsystem.where(minor: [nil, ''])).first
+    Operatingsystem.where(name: 'Ubuntu').where.not(minor: [nil, '']).each do |os|
+      unless Operatingsystem.find_by(name: 'Ubuntu', major: "#{os.major}.#{os.minor}", minor: [nil, ''])
         os.update(major: "#{os.major}.#{os.minor}", minor: nil)
       end
     end
+  end
 end
-