diff --git a/uart/uart_parameter_config.cpp b/uart/uart_parameter_config.cpp
index 2e8bff8..f0b7f9d 100644
--- a/uart/uart_parameter_config.cpp
+++ b/uart/uart_parameter_config.cpp
@@ -14,8 +14,8 @@ extern zlog_category_t* zct;
 extern zlog_category_t* zbt;
 #define IN_LEN      (128*1024ul)
 #define OUT_LEN     (IN_LEN + IN_LEN / 16 + 64 + 3)
-unsigned char fw_outdata[50000]={0};
-unsigned char fw_senddata[50000]={0};
+unsigned char fw_outdata[70000]={0};
+unsigned char fw_senddata[70000]={0};
 
 /* Work-memory needed for compression. Allocate memory in units
  * of 'lzo_align_t' (instead of 'char') to make sure it is properly aligned.