diff --git a/websocket/define.h b/websocket/define.h
index cd4c61b9a41ff5e4ff6d8efa4a7ea0476f3d896e..5afdd8b3dace26e9e3dd315a7e83d99a9d5d0e37 100644
--- a/websocket/define.h
+++ b/websocket/define.h
@@ -38,9 +38,9 @@ namespace OHOS::ArkCompiler::Toolchain {
 std::vector<std::string> ProtocolSplit(const std::string& str, const std::string& input)
 {
     std::vector<std::string> result;
-    uint32_t prev = 0;
-    uint32_t len = input.length();
-    uint32_t cur = str.find(input);
+    size_t prev = 0;
+    size_t len = input.length();
+    size_t cur = str.find(input);
     while (cur != std::string::npos) {
         std::string tmp = str.substr(prev, cur - prev);
         result.push_back(tmp);