diff --git a/tiflash/tiflash-configuration.md b/tiflash/tiflash-configuration.md
index 9d3bf96f3f81d..692d5c7e1a3a1 100644
--- a/tiflash/tiflash-configuration.md
+++ b/tiflash/tiflash-configuration.md
@@ -98,7 +98,7 @@ delta_index_cache_size = 0
 
     ## [storage.io_rate_limit] settings are new in v5.2.0.
     [storage.io_rate_limit]
-    ## This configuration item determines whether to limit the I/O traffic, which is disabled by default. This traffic limit in TiFlash is suitable for cloud storage that has disk bandwidth of a small and specific size.
+    ## This configuration item determines whether to limit the I/O traffic, which is disabled by default. This traffic limit in TiFlash is suitable for cloud storage that has the disk bandwidth of a small and specific size.
     ## The total I/O bandwidth for disk reads and writes. The unit is bytes and the default value is 0, which means the I/O traffic is not limited by default.
     # max_bytes_per_sec = 0
     ## max_read_bytes_per_sec and max_write_bytes_per_sec have similar meanings to max_bytes_per_sec. max_read_bytes_per_sec means the total I/O bandwidth for disk reads, and max_write_bytes_per_sec means the total I/O bandwidth for disk writes.