diff --git a/src/errorhandle/GUIErrorFactory.cpp b/src/errorhandle/GUIErrorFactory.cpp
index 60a8f79..2ceff4c 100644
--- a/src/errorhandle/GUIErrorFactory.cpp
+++ b/src/errorhandle/GUIErrorFactory.cpp
@@ -10,7 +10,7 @@ GUIErrorBase *GUIErrorFactory::getError(const QString &errorMsg) {
 
     if (errorMsg.isEmpty()) return new GUIErrorBase;
     //新模式，分级
-    if (errorMsg[1] == ' ') {
+    if (errorMsg.length()>1 && errorMsg[1] == ' ') {
         char c = errorMsg[0].toLower().toLatin1();
         switch (c) {
             //WARN 级别