diff --git a/labor01.cpp b/labor01.cpp
index 3834d06..dc00057 100644
--- a/labor01.cpp
+++ b/labor01.cpp
@@ -49,6 +49,10 @@ int main(int argc, char* argv[1]) {
             CURLcode res;
             curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
             res = curl_easy_perform(curl);
+            if (res != CURLE_OK) {
+                cerr << curl_easy_strerror(res);
+                exit(1);
+            }
             curl_easy_cleanup(curl);
         }
         return 0;