diff --git a/ext/curl/interface.c b/ext/curl/interface.c
index 67ec5aabc39..2f018150419 100644
--- a/ext/curl/interface.c
+++ b/ext/curl/interface.c
@@ -1178,7 +1178,7 @@ static void _php_curl_set_default_options(php_curl *ch)
 	}
 
 #ifdef ZTS
-	curl_easy_setopt(ch->cp, CURLOPT_NOSIGNAL, 1);
+	curl_easy_setopt(ch->cp, CURLOPT_NOSIGNAL, 1L);
 #endif
 }
 /* }}} */