diff --git a/libs/ardour/beatbox.cc b/libs/ardour/beatbox.cc
index 9785bcbd5b..149c2aa2ec 100644
--- a/libs/ardour/beatbox.cc
+++ b/libs/ardour/beatbox.cc
@@ -38,7 +38,7 @@ using std::endl;
 
 using namespace ARDOUR;
 
-MultiAllocSingleReleasePool BeatBox::Event::pool (X_("beatbox events"), sizeof (Event*), 2048);
+MultiAllocSingleReleasePool BeatBox::Event::pool (X_("beatbox events"), sizeof (Event), 2048);
 
 BeatBox::BeatBox (Session& s)
 	: Processor (s, _("BeatBox"))