diff --git a/src/libslic3r/Print.cpp b/src/libslic3r/Print.cpp
index 1a614ab48..91208bcc8 100644
--- a/src/libslic3r/Print.cpp
+++ b/src/libslic3r/Print.cpp
@@ -429,7 +429,7 @@ void Print::model_volume_list_update_supports_seams(ModelObject &model_object_ds
             assert(model_volume_dst->get_matrix().isApprox(model_volume_src->get_matrix()));
         } else {
             // The volume was not found in the old list. Create a new copy.
-            assert(model_volume_src->is_support_modifier() || model_volume_dst->is_seam_position());
+            assert(model_volume_src->is_support_modifier() || model_volume_src->is_seam_position());
             model_object_dst.volumes.emplace_back(new ModelVolume(*model_volume_src));
             model_object_dst.volumes.back()->set_model_object(&model_object_dst);
         }
diff --git a/src/slic3r/GUI/GUI_Preview.cpp b/src/slic3r/GUI/GUI_Preview.cpp
index ebe5bcca3..a5b75e7b8 100644
--- a/src/slic3r/GUI/GUI_Preview.cpp
+++ b/src/slic3r/GUI/GUI_Preview.cpp
@@ -21,8 +21,13 @@
 #include <wx/checkbox.h>
 #include <wx/display.h>
 
+#include <boost/locale.hpp>
+#include <boost/locale/generator.hpp>
 #include <boost/filesystem.hpp>
 #include <boost/filesystem/path.hpp>
+#include <boost/nowide/fstream.hpp>
+#include <boost/property_tree/ini_parser.hpp>
+#include <boost/property_tree/ptree.hpp>
 
 // this include must follow the wxWidgets ones or it won't compile on Windows -> see http://trac.wxwidgets.org/ticket/2421
 #include "libslic3r/Print.hpp"
diff --git a/tests/superslicerlibslic3r/test_print.cpp b/tests/superslicerlibslic3r/test_print.cpp
index 33ff474b6..347b5743b 100644
--- a/tests/superslicerlibslic3r/test_print.cpp
+++ b/tests/superslicerlibslic3r/test_print.cpp
@@ -7,7 +7,7 @@
 #include "test_data.hpp"
 #include <libslic3r/libslic3r.h>
 #include <libslic3r/SVG.hpp>
-#include <libslic3r/config.hpp>
+//#include <libslic3r/config.hpp>
 #include <string>
 
 using namespace Slic3r;