diff --git a/ext/curl/interface.c b/ext/curl/interface.c
index e47c9c43bc8a9..b75dce2e4c75d 100644
--- a/ext/curl/interface.c
+++ b/ext/curl/interface.c
@@ -1631,12 +1631,17 @@ static bool php_curl_set_callable_handler(zend_fcall_info_cache *const handler_f
 }
 
 
-#define HANDLE_CURL_OPTION_CALLABLE_PHP_CURL_USER(curl_ptr, constant_no_function, handler_type) \
+#define HANDLE_CURL_OPTION_CALLABLE_PHP_CURL_USER(curl_ptr, constant_no_function, handler_type, default_method) \
 	case constant_no_function##FUNCTION: { \
 		bool result = php_curl_set_callable_handler(&curl_ptr->handlers.handler_type->fcc, zvalue, is_array_config, #constant_no_function "FUNCTION"); \
 		if (!result) { \
+			curl_ptr->handlers.handler_type->method = default_method; \
 			return FAILURE; \
 		} \
+		if (!ZEND_FCC_INITIALIZED(curl_ptr->handlers.handler_type->fcc)) { \
+			curl_ptr->handlers.handler_type->method = default_method; \
+			return SUCCESS; \
+		} \
 		curl_ptr->handlers.handler_type->method = PHP_CURL_USER; \
 		break; \
 	}
@@ -1659,9 +1664,9 @@ static zend_result _php_curl_setopt(php_curl *ch, zend_long option, zval *zvalue
 
 	switch (option) {
 		/* Callable options */
-		HANDLE_CURL_OPTION_CALLABLE_PHP_CURL_USER(ch, CURLOPT_WRITE, write);
-		HANDLE_CURL_OPTION_CALLABLE_PHP_CURL_USER(ch, CURLOPT_HEADER, write_header);
-		HANDLE_CURL_OPTION_CALLABLE_PHP_CURL_USER(ch, CURLOPT_READ, read);
+		HANDLE_CURL_OPTION_CALLABLE_PHP_CURL_USER(ch, CURLOPT_WRITE, write, PHP_CURL_STDOUT);
+		HANDLE_CURL_OPTION_CALLABLE_PHP_CURL_USER(ch, CURLOPT_HEADER, write_header, PHP_CURL_IGNORE);
+		HANDLE_CURL_OPTION_CALLABLE_PHP_CURL_USER(ch, CURLOPT_READ, read, PHP_CURL_DIRECT);
 
 		HANDLE_CURL_OPTION_CALLABLE(ch, CURLOPT_PROGRESS, handlers.progress, curl_progress);
 		HANDLE_CURL_OPTION_CALLABLE(ch, CURLOPT_XFERINFO, handlers.xferinfo, curl_xferinfo);
diff --git a/ext/curl/tests/gh16359.phpt b/ext/curl/tests/gh16359.phpt
new file mode 100644
index 0000000000000..4cb5d7867bc97
--- /dev/null
+++ b/ext/curl/tests/gh16359.phpt
@@ -0,0 +1,16 @@
+--TEST--
+GH-16359 - curl_setopt with CURLOPT_WRITEFUNCTION and no user fn
+--EXTENSIONS--
+curl
+--FILE--
+<?php
+$log_file = tempnam(sys_get_temp_dir(), 'php-curl-CURLOPT_WRITEFUNCTION-trampoline');
+$fp = fopen($log_file, 'w+');
+fwrite($fp, "test");
+$ch = curl_init();
+curl_setopt($ch, CURLOPT_WRITEFUNCTION, null);
+curl_setopt($ch, CURLOPT_URL, 'file://' . $log_file);
+curl_exec($ch);
+?>
+--EXPECT--
+test