diff --git a/native/cocos/editor-support/spine/SpineString.cpp b/native/cocos/editor-support/spine/SpineString.cpp
index c86cfc439f2..617bbc10f6c 100644
--- a/native/cocos/editor-support/spine/SpineString.cpp
+++ b/native/cocos/editor-support/spine/SpineString.cpp
@@ -55,7 +55,8 @@ String::String(const char *chars, size_t len, bool own) {
     }
 }
 
-String::String(const char *chars, bool own/* = false*/): String(chars, strlen(chars), own) {
+String::String(const char *chars, bool own/* = false*/)
+    : String(chars, (chars ? strlen(chars) : 0), own) {
 }
 
 String::String(const String &other) {