diff --git a/pecl_http-3.0.1/src/php_http_client_curl.c b/pecl_http-3.0.1/src/php_http_client_curl.c
index 2bcf533..011de5b 100644
--- a/pecl_http-3.0.1/src/php_http_client_curl.c
+++ b/pecl_http-3.0.1/src/php_http_client_curl.c
@@ -1645,7 +1645,7 @@ static ZEND_RESULT_CODE php_http_curle_set_option(php_http_option_t *opt, zval *
 				rv = FAILURE;
 			}
 		} else if ((opt->flags & PHP_HTTP_CURLE_OPTION_CHECK_STRLEN) && !Z_STRLEN_P(val)) {
-			if (CURLE_OK != (rc = curl_easy_setopt(ch, opt->option, NULL))) {
+			if (CURLE_OK != (rc = curl_easy_setopt(ch, opt->option, ""))) {
 				rv = FAILURE;
 			}
 		} else if ((opt->flags & PHP_HTTP_CURLE_OPTION_CHECK_BASEDIR) && Z_STRVAL_P(val) && SUCCESS != php_check_open_basedir(Z_STRVAL_P(val))) {
diff --git a/pecl_http-3.0.1/tests/client027.phpt b/pecl_http-3.0.1/tests/client027.phpt
new file mode 100644
index 0000000..07a2724
--- /dev/null
+++ b/pecl_http-3.0.1/tests/client027.phpt
@@ -0,0 +1,43 @@
+--TEST--
+Empty string setOptions
+--SKIPIF--
+<?php 
+include "skipif.inc";
+skip_client_test();
+?>
+--FILE--
+<?php 
+
+include "helper/server.inc";
+
+echo "Test\n";
+
+putenv('http_proxy=http://127.0.0.1:1'); 
+
+$request = new http\Client\Request("GET", "http://localhost");
+
+server("proxy.inc", function($port) use($request) {
+	$request->setOptions(array("port" => $port));
+	$request->setOptions(array("proxyhost" => '')); // override the invalid proxy
+	$request->setOptions(array("useragent" => ''));
+	$client = new http\Client;
+	$client->enqueue($request);
+	$client->send();
+	echo $client->getResponse();
+});
+?>
+===DONE===
+--EXPECTF--
+Test
+HTTP/1.1 200 OK
+Accept-Ranges: bytes
+X-Request-Content-Length: 0
+Etag: "%s"
+X-Original-Transfer-Encoding: chunked
+Content-Length: 49
+
+GET / HTTP/1.1
+Accept: */*
+Host: localhost:%i
+
+===DONE===