diff --git a/src/kernel/config.h b/src/kernel/config.h
index b405ed585..656b2e012 100644
--- a/src/kernel/config.h
+++ b/src/kernel/config.h
@@ -25,7 +25,7 @@ extern "C" {
 
     /* this should always be the first thing included after platform.h */
 #include "types.h"
-
+struct param;
     /* experimental gameplay features (that don't affect the savefile) */
     /* TODO: move these settings to settings.h or into configuration files */
 #define GOBLINKILL              /* Goblin-Spezialklau kann tödlich enden */