diff --git a/Histogram/main.cpp b/Histogram/main.cpp
index 5e76d00..69d5d96 100644
--- a/Histogram/main.cpp
+++ b/Histogram/main.cpp
@@ -50,6 +50,11 @@ int main(int argc, char* argv[]) {
             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;