diff --git a/lib/redmine_dmsf/webdav/dmsf_resource.rb b/lib/redmine_dmsf/webdav/dmsf_resource.rb
index cea063f1..d4cd4e6f 100644
--- a/lib/redmine_dmsf/webdav/dmsf_resource.rb
+++ b/lib/redmine_dmsf/webdav/dmsf_resource.rb
@@ -745,7 +745,8 @@ private
           next if lock.expired?
           # lock should be exclusive but just in case make sure we find this users lock
           next if lock.user != User.current
-          if lock.revision != file.last_revision.id
+          if lock.revision < file.last_revision.id
+            # At least one new revision has been created since the lock was created, reuse that revision.
             return true
           end
         end