diff --git a/Source/cmCurl.cxx b/Source/cmCurl.cxx
index b9133ed7d4..0cf8a71a72 100644
--- a/Source/cmCurl.cxx
+++ b/Source/cmCurl.cxx
@@ -170,7 +170,7 @@ std::string cmCurlSetNETRCOption(::CURL* curl, const std::string& netrc_level,
                                  const std::string& netrc_file)
 {
   std::string e;
-  CURL_NETRC_OPTION curl_netrc_level = CURL_NETRC_LAST;
+  long curl_netrc_level = CURL_NETRC_LAST;
   ::CURLcode res;
 
   if (!netrc_level.empty()) {