diff --git a/INSTALL b/INSTALL
index 9d48b9e..b10284e 100644
--- a/INSTALL
+++ b/INSTALL
@@ -12,6 +12,6 @@ Chinese language: http://www.fastken.com/
 # the command lines as:
 
    git clone https://github.com/happyfish100/libfastcommon.git
-   cd libfastcommon; git checkout V1.0.42
+   cd libfastcommon; git checkout V1.0.43
    ./make.sh clean && ./make.sh && ./make.sh install
 
diff --git a/libfastcommon.spec b/libfastcommon.spec
index 6f0a849..8baadb6 100644
--- a/libfastcommon.spec
+++ b/libfastcommon.spec
@@ -4,7 +4,7 @@
 %define CommitVersion %(echo $COMMIT_VERSION)
 
 Name: libfastcommon
-Version: 1.0.42
+Version: 1.0.43
 Release: 1%{?dist}
 Summary: c common functions library extracted from my open source projects FastDFS
 License: LGPL
diff --git a/src/buffered_file_writer.c b/src/buffered_file_writer.c
index ad53d31..5a52c25 100644
--- a/src/buffered_file_writer.c
+++ b/src/buffered_file_writer.c
@@ -204,11 +204,5 @@ int buffered_file_writer_append_buff(BufferedFileWriter *writer,
 
     memcpy(writer->current, buff, len);
     writer->current += len;
-    if (writer->current > writer->water_mark)
-    {
-        return buffered_file_writer_flush(writer);
-    }
-
     return 0;
 }
-