diff --git a/Source/Core/DataModel.h b/Source/Core/DataModel.h
index fe494981c..0d2f7001b 100644
--- a/Source/Core/DataModel.h
+++ b/Source/Core/DataModel.h
@@ -32,6 +32,7 @@
 #include "../../Include/RmlUi/Core/Header.h"
 #include "../../Include/RmlUi/Core/Types.h"
 #include "../../Include/RmlUi/Core/Traits.h"
+#include "../../Include/RmlUi/Core/DataModelHandle.h"
 #include "../../Include/RmlUi/Core/DataTypes.h"
 #include "../../Include/RmlUi/Core/DataVariable.h"