diff --git a/examples/simple_example/api_v1_ApiTest.h b/examples/simple_example/api_v1_ApiTest.h
index 81755b29..35972fc7 100755
--- a/examples/simple_example/api_v1_ApiTest.h
+++ b/examples/simple_example/api_v1_ApiTest.h
@@ -11,7 +11,7 @@ class ApiTest : public drogon::HttpApiController<ApiTest>
     METHOD_LIST_BEGIN
     //use METHOD_ADD to add your custom processing function here;
     METHOD_ADD(ApiTest::get, "/get/{2}/{1}", "drogon::GetFilter");                  //path will be /api/v1/apitest/get/{arg2}/{arg1}
-    METHOD_ADD(ApiTest::your_method_name, "/{1}/list?p2={2}", "drogon::GetFilter"); //path will be /api/v1/apitest/{arg1}/list
+    METHOD_ADD(ApiTest::your_method_name, "/{1}/List?P2={2}", "drogon::GetFilter"); //path will be /api/v1/apitest/{arg1}/list
     METHOD_ADD(ApiTest::staticApi, "/static");
     METHOD_ADD(ApiTest::get2, "/get/{1}", "drogon::GetFilter");
     METHOD_LIST_END
diff --git a/lib/inc/drogon/HttpApiController.h b/lib/inc/drogon/HttpApiController.h
index 1a3a439f..8ce63936 100755
--- a/lib/inc/drogon/HttpApiController.h
+++ b/lib/inc/drogon/HttpApiController.h
@@ -52,7 +52,7 @@ class HttpApiController : public DrObject<T>
             path.append("/");
             path.append(methodName);
         }
-        transform(path.begin(), path.end(), path.begin(), tolower);
+        //transform(path.begin(), path.end(), path.begin(), tolower);
         std::string::size_type pos;
         while ((pos = path.find("::")) != std::string::npos)
         {
diff --git a/lib/src/HttpAppFrameworkImpl.cc b/lib/src/HttpAppFrameworkImpl.cc
index 3538e276..b9eb5599 100755
--- a/lib/src/HttpAppFrameworkImpl.cc
+++ b/lib/src/HttpAppFrameworkImpl.cc
@@ -112,13 +112,13 @@ void HttpAppFrameworkImpl::initRegex()
     {
         std::regex reg("\\(\\[\\^/\\]\\*\\)");
         std::string tmp = std::regex_replace(binder.pathParameterPattern, reg, "[^/]*");
-        binder._regex=std::regex(binder.pathParameterPattern,std::regex_constants::icase);
+        binder._regex = std::regex(binder.pathParameterPattern, std::regex_constants::icase);
         regString.append("(").append(tmp).append(")|");
     }
     if (regString.length() > 0)
         regString.resize(regString.length() - 1); //remove the last '|'
     LOG_TRACE << "regex string:" << regString;
-    _apiRegex = std::regex(regString,std::regex_constants::icase);
+    _apiRegex = std::regex(regString, std::regex_constants::icase);
 }
 void HttpAppFrameworkImpl::registerWebSocketController(const std::string &pathName,
                                                        const std::string &ctrlName,
@@ -184,7 +184,6 @@ void HttpAppFrameworkImpl::addApiPath(const std::string &path,
     std::map<std::string, size_t> parametersPlaces;
     if (!paras.empty())
     {
-
         std::regex pregex("([^&]*)=\\{([0-9]+)\\}&*");
         while (std::regex_search(paras, results, pregex))
         {
@@ -219,7 +218,7 @@ void HttpAppFrameworkImpl::registerHttpApiController(const std::string &pathPatt
     assert(binder);
     std::string path(pathPattern);
 
-    std::transform(path.begin(), path.end(), path.begin(), tolower);
+    //std::transform(path.begin(), path.end(), path.begin(), tolower);
     addApiPath(path, binder, filters);
 }
 void HttpAppFrameworkImpl::setThreadNum(size_t threadNum)
@@ -938,6 +937,7 @@ void HttpAppFrameworkImpl::onAsyncRequest(const HttpRequestPtr &req, const std::
         {
             for (size_t i = 1; i < result.size(); i++)
             {
+                //FIXME:Is there any better way to find the sub-match index without using loop?
                 if (!result[i].matched)
                     continue;
                 if (result[i].str() == req->path() && i <= _apiCtrlVector.size())
@@ -1074,8 +1074,8 @@ void HttpAppFrameworkImpl::readSendFile(const std::string &filePath, const HttpR
     pbuf->pubseekoff(0, infile.beg); // rewind
 
     if (_useSendfile &&
-        filesize > 1024 * 200) 
-        //FIXME : Is 200k an appropriate value? Or set it to be configurable
+        filesize > 1024 * 200)
+    //FIXME : Is 200k an appropriate value? Or set it to be configurable
     {
         //The advantages of sendfile() can only be reflected in sending large files.
         std::dynamic_pointer_cast<HttpResponseImpl>(resp)->setSendfile(filePath);