diff --git a/service/debug_console.lua b/service/debug_console.lua
index 2ff5adce..a5e735c0 100644
--- a/service/debug_console.lua
+++ b/service/debug_console.lua
@@ -231,7 +231,7 @@ function COMMAND.debug(address, fd)
 	skynet.fork(function()
 		repeat
 			local cmdline = socket.readline(fd, "\n")
-            cmdline = cmdline and cmdline:gsub("(.*)\r$", "%1")
+			cmdline = cmdline and cmdline:gsub("(.*)\r$", "%1")
 			if not cmdline then
 				skynet.send(agent, "lua", "cmd", "cont")
 				break