diff --git a/lib/fluent/plugin/buf_file.rb b/lib/fluent/plugin/buf_file.rb
index d7e83c58bc..4172909509 100644
--- a/lib/fluent/plugin/buf_file.rb
+++ b/lib/fluent/plugin/buf_file.rb
@@ -197,10 +197,6 @@ def generate_chunk(metadata)
       def handle_broken_files(path, mode, e)
         log.error "found broken chunk file during resume.", :path => path, :mode => mode, :err_msg => e.message
         unique_id = Fluent::Plugin::Buffer::FileChunk.unique_id_from_path(path)
-        if @disable_chunk_backup
-          log.warn "disable_chunk_backup is true. #{dump_unique_id_hex(unique_id)} chunk is thrown away"
-          return
-        end
         backup(unique_id) { |f|
           File.open(path, 'rb') { |chunk|
             chunk.set_encoding(Encoding::ASCII_8BIT)
@@ -212,6 +208,7 @@ def handle_broken_files(path, mode, e)
       rescue => error
         log.error "backup failed. Delete corresponding files.", :err_msg => error.message
       ensure
+        log.warn "disable_chunk_backup is true. #{dump_unique_id_hex(unique_id)} chunk is thrown away." if @disable_chunk_backup
         File.unlink(path, path + '.meta') rescue nil
       end
 
diff --git a/lib/fluent/plugin/buf_file_single.rb b/lib/fluent/plugin/buf_file_single.rb
index c798a294a0..f11c5df7e7 100644
--- a/lib/fluent/plugin/buf_file_single.rb
+++ b/lib/fluent/plugin/buf_file_single.rb
@@ -209,10 +209,6 @@ def generate_chunk(metadata)
       def handle_broken_files(path, mode, e)
         log.error "found broken chunk file during resume.", :path => path, :mode => mode, :err_msg => e.message
         unique_id, _ = Fluent::Plugin::Buffer::FileSingleChunk.unique_id_and_key_from_path(path)
-        if @disable_chunk_backup
-          log.warn "disable_chunk_backup is true. #{dump_unique_id_hex(unique_id)} chunk is thrown away"
-          return
-        end
         backup(unique_id) { |f|
           File.open(path, 'rb') { |chunk|
             chunk.set_encoding(Encoding::ASCII_8BIT)
@@ -224,6 +220,7 @@ def handle_broken_files(path, mode, e)
       rescue => error
         log.error "backup failed. Delete corresponding files.", :err_msg => error.message
       ensure
+        log.warn "disable_chunk_backup is true. #{dump_unique_id_hex(unique_id)} chunk is thrown away." if @disable_chunk_backup
         File.unlink(path) rescue nil
       end
 
diff --git a/lib/fluent/plugin/buffer.rb b/lib/fluent/plugin/buffer.rb
index 6f8ddcfa2c..d04ae08296 100644
--- a/lib/fluent/plugin/buffer.rb
+++ b/lib/fluent/plugin/buffer.rb
@@ -908,6 +908,12 @@ def statistics
 
       def backup(chunk_unique_id)
         unique_id = dump_unique_id_hex(chunk_unique_id)
+
+        if @disable_chunk_backup
+          log.warn "disable_chunk_backup is true. #{unique_id} chunk is not backed up."
+          return
+        end
+
         safe_owner_id = owner.plugin_id.gsub(/[ "\/\\:;|*<>?]/, '_')
         backup_base_dir = system_config.root_dir || DEFAULT_BACKUP_DIR
         backup_file = File.join(backup_base_dir, 'backup', "worker#{fluentd_worker_id}", safe_owner_id, "#{unique_id}.log")