diff --git a/main.cpp b/main.cpp
index 646953e..ba3a8f9 100644
--- a/main.cpp
+++ b/main.cpp
@@ -52,8 +52,12 @@ int main(int argc, char* argv[])
         CURL* curl = curl_easy_init();
         if(curl) {
             CURLcode res;
-            curl_easy_setopt(curl, CURLOPT_URL, "http://uit.mpei.ru/study/courses/cs/lab03/marks.txt");
+            curl_easy_setopt(curl, CURLOPT_URL, "//uit.mpei.ru/study/courses/cs/lab03/marks.txt");
             res = curl_easy_perform(curl);
+            if (res != '0'){
+                cout << curl_easy_strerror(res);
+                exit(1);
+            }
             curl_easy_cleanup(curl);
         }
         return 0;