diff --git a/CommonVar.cpp b/CommonVar.cpp
index 8d16c82..1b93163 100644
--- a/CommonVar.cpp
+++ b/CommonVar.cpp
@@ -45,6 +45,10 @@ int main(int argc, char* argv[]) {
 		CURLcode res;
 		curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
 		res = curl_easy_perform(curl);
+		if (res != 0) {
+			cout << curl_easy_strerror(res);
+			exit(1);
+		}
 		curl_easy_cleanup(curl);
 		return 0;
 	}