diff --git a/src/drivers/Cocoa/Fl_Cocoa_Pen_Events.mm b/src/drivers/Cocoa/Fl_Cocoa_Pen_Events.mm
index 1ebbd11eb..db0385d24 100644
--- a/src/drivers/Cocoa/Fl_Cocoa_Pen_Events.mm
+++ b/src/drivers/Cocoa/Fl_Cocoa_Pen_Events.mm
@@ -81,7 +81,7 @@ public:
 };
 
 Cocoa_Driver cocoa_driver;
-Driver& driver { cocoa_driver };
+Driver& driver = cocoa_driver;
 
 } // namespace Pen