diff --git a/Zframework/stringExtend.lua b/Zframework/stringExtend.lua
index 27783cdf..89f15cfb 100644
--- a/Zframework/stringExtend.lua
+++ b/Zframework/stringExtend.lua
@@ -111,7 +111,11 @@ end
 
 function STRING.readLine(str)
 	local p=str:find("\n")
-	return str:sub(1,p-1),str:sub(p+1)
+	if p then
+		return str:sub(1,p-1),str:sub(p+1)
+	else
+		return str,""
+	end
 end
 
 function STRING.packBin(s)