diff --git a/src/mame/includes/coolpool.h b/src/mame/includes/coolpool.h
index 58c6c5f49b7..3f75fd63770 100644
--- a/src/mame/includes/coolpool.h
+++ b/src/mame/includes/coolpool.h
@@ -1,4 +1,4 @@
-class coolpool_state
+class coolpool_state
 {
 public:
 	static void *alloc(running_machine &machine) { return auto_alloc_clear(&machine, coolpool_state(machine)); }