diff --git a/src/lib/synergy/DpiHelper.h b/src/lib/synergy/DpiHelper.h
index 8f37de966a..0488a46523 100644
--- a/src/lib/synergy/DpiHelper.h
+++ b/src/lib/synergy/DpiHelper.h
@@ -17,6 +17,8 @@
 
 #pragma once
 
+#include "common/common.h"
+
 class DpiHelper {
 public:
 	enum EDpi {