-#include "php_http_util_object.h"
-#include "php_http_message_object.h"
-#include "php_http_response_object.h"
-#include "php_http_request_object.h"
+#ifdef ZEND_ENGINE_2
+# include "php_http_util_object.h"
+# include "php_http_message_object.h"
+# include "php_http_response_object.h"
+# ifdef HTTP_HAVE_CURL
+# include "php_http_request_object.h"
+# endif
+# include "php_http_exception_object.h"
+#endif