diff --git a/hw/display/milkymist-tmu2.c b/hw/display/milkymist-tmu2.c
index 356483fb21..9c0018448a 100644
--- a/hw/display/milkymist-tmu2.c
+++ b/hw/display/milkymist-tmu2.c
@@ -29,6 +29,7 @@
 #include "hw/sysbus.h"
 #include "trace.h"
 #include "qemu/error-report.h"
+#include "qapi/error.h"
 
 #include <X11/Xlib.h>
 #include <epoxy/gl.h>