diff --git a/private/daemonize.h b/private/daemonize.h
index 1c8e425..ad8c275 100644
--- a/private/daemonize.h
+++ b/private/daemonize.h
@@ -15,7 +15,7 @@ namespace cppcms {
 namespace json { class value; }
 namespace impl {
 	
-class daemonizer {
+class CPPCMS_API daemonizer {
 public:
 	daemonizer(json::value const &conf);
 	~daemonizer();