diff --git a/src/alias.txt b/src/alias.txt
index 54df944..392856c 100644
--- a/src/alias.txt
+++ b/src/alias.txt
@@ -193,7 +193,7 @@ alias nn='micro'
 alias nnd='micro compose.yml'
 alias dush='du -sh'
 
-function wdt() {
+function ddt() {
   echo "输入测速文件大小(MB) [默认: 2048]: "
   read -t 30 -p "> " testfile_size
   if [ $? -ne 0 ] || [ -z "$testfile_size" ]; then