diff --git a/src/slic3r/GUI/DeviceCore/DevFilaBlackList.h b/src/slic3r/GUI/DeviceCore/DevFilaBlackList.h
index b77d8e8b1e..7eed1f5a97 100644
--- a/src/slic3r/GUI/DeviceCore/DevFilaBlackList.h
+++ b/src/slic3r/GUI/DeviceCore/DevFilaBlackList.h
@@ -1,4 +1,5 @@
 #pragma once
+#include <wx/string.h>
 #include "slic3r/Utils/json_diff.hpp"
 
 namespace Slic3r
diff --git a/src/slic3r/GUI/DeviceCore/DevFirmware.h b/src/slic3r/GUI/DeviceCore/DevFirmware.h
index c89ed470d8..35edf9658e 100644
--- a/src/slic3r/GUI/DeviceCore/DevFirmware.h
+++ b/src/slic3r/GUI/DeviceCore/DevFirmware.h
@@ -1,5 +1,6 @@
 #pragma once
 #include <nlohmann/json.hpp>
+#include <wx/string.h>
 #include "slic3r/Utils/json_diff.hpp"
 
 namespace Slic3r {