diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index ebc8a7933..bd8f8130f 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -94,6 +94,7 @@ namespace fs = boost::filesystem;
 using Slic3r::_3DScene;
 using Slic3r::Preset;
 using Slic3r::PrintHostJob;
+using Slic3r::GUI::format_wxstr;
 
 static const std::pair<unsigned int, unsigned int> THUMBNAIL_SIZE_3MF = { 256, 256 };
 
diff --git a/src/slic3r/pchheader.hpp b/src/slic3r/pchheader.hpp
index a33b8a3a6..ebdabe836 100644
--- a/src/slic3r/pchheader.hpp
+++ b/src/slic3r/pchheader.hpp
@@ -184,4 +184,6 @@
 #include "libslic3r/ClipperUtils.hpp"
 #include "libslic3r/libslic3r.h"
 
+#ifdef _WIN32
 #include "GUI/format.hpp"
+#endif // _WIN32