diff --git a/libs/surfaces/mackie/surface.cc b/libs/surfaces/mackie/surface.cc
index c237cfcb25..3770a335e7 100644
--- a/libs/surfaces/mackie/surface.cc
+++ b/libs/surfaces/mackie/surface.cc
@@ -51,6 +51,10 @@
 
 #include "i18n.h"
 
+#ifdef PLATFORM_WINDOWS
+#define random() rand()
+#endif
+
 using namespace std;
 using namespace PBD;
 using ARDOUR::Route;