diff --git a/.github/ISSUE_TEMPLATE/bug_report_form.yml b/.github/ISSUE_TEMPLATE/bug_report_form.yml
index 7cbaddc49f..cb35544473 100644
--- a/.github/ISSUE_TEMPLATE/bug_report_form.yml
+++ b/.github/ISSUE_TEMPLATE/bug_report_form.yml
@@ -22,7 +22,7 @@ body:
       label: Project file & How to reproduce
       description: "*Please* upload a ZIP archive containing the project file used when the problem arise. Please export it just before the problem occurs. Even if you did nothing and/or there is no object, export it! (it contains your current configuration)."
       placeholder: |
-        `File`->`Export project as...` then zip it & drop it here
+        `File`->`Save project as...` then zip it & drop it here
         Also, if needed include the steps to reproduce the bug:
         1. Go to '...'
         2. Click on '....'
diff --git a/src/hints/HintsToPot.cpp b/src/hints/HintsToPot.cpp
index 7c8029cdeb..4791f0612f 100644
--- a/src/hints/HintsToPot.cpp
+++ b/src/hints/HintsToPot.cpp
@@ -9,7 +9,7 @@
 
 bool write_to_pot(boost::filesystem::path path, const std::vector<std::pair<std::string, std::string>>& data)
 {
-	boost::filesystem::ofstream file(std::move(path), std::ios_base::app);
+	boost::nowide::ofstream file(path.string(), std::ios_base::app);
 	for (const auto& element : data)
 	{
 		//Example of .pot element 
diff --git a/src/libslic3r/Fill/Lightning/TreeNode.cpp b/src/libslic3r/Fill/Lightning/TreeNode.cpp
index b36a66dbb7..d1820410ee 100644
--- a/src/libslic3r/Fill/Lightning/TreeNode.cpp
+++ b/src/libslic3r/Fill/Lightning/TreeNode.cpp
@@ -375,8 +375,9 @@ void Node::convertToPolylines(size_t long_line_idx, Polygons& output) const
 void Node::removeJunctionOverlap(Polygons& result_lines, const coord_t line_width) const
 {
     const coord_t reduction = line_width / 2; // TODO make configurable?
-    for (auto poly_it = result_lines.begin(); poly_it != result_lines.end(); ) {
-        Polygon &polyline = *poly_it;
+    size_t res_line_idx = 0;
+    while (res_line_idx < result_lines.size()) {
+        Polygon &polyline = result_lines[res_line_idx];
         if (polyline.size() <= 1) {
             polyline = std::move(result_lines.back());
             result_lines.pop_back();
@@ -403,7 +404,7 @@ void Node::removeJunctionOverlap(Polygons& result_lines, const coord_t line_widt
             polyline = std::move(result_lines.back());
             result_lines.pop_back();
         } else
-            ++ poly_it;
+            ++ res_line_idx;
     }
 }
 
diff --git a/src/libslic3r/Preset.cpp b/src/libslic3r/Preset.cpp
index f3a1c15b3e..f171cb14dd 100644
--- a/src/libslic3r/Preset.cpp
+++ b/src/libslic3r/Preset.cpp
@@ -84,7 +84,7 @@ ConfigFileType guess_config_file_type(const ptree &tree)
 VendorProfile VendorProfile::from_ini(const boost::filesystem::path &path, bool load_all)
 {
     ptree tree;
-    boost::filesystem::ifstream ifs(path);
+    boost::nowide::ifstream ifs(path.string());
     boost::property_tree::read_ini(ifs, tree);
     return VendorProfile::from_ini(tree, path, load_all);
 }
diff --git a/src/slic3r/GUI/HintNotification.cpp b/src/slic3r/GUI/HintNotification.cpp
index 93e0fb3259..820b74eedb 100644
--- a/src/slic3r/GUI/HintNotification.cpp
+++ b/src/slic3r/GUI/HintNotification.cpp
@@ -14,12 +14,14 @@
 #include "libslic3r/Config.hpp"
 #include "libslic3r/PrintConfig.hpp"
 
+#include <map>
+
 #include <boost/algorithm/string/replace.hpp>
 #include <boost/filesystem.hpp>
 #include <boost/nowide/fstream.hpp>
 #include <boost/log/trivial.hpp>
 #include <boost/property_tree/ini_parser.hpp>
-#include <map>
+
 #include <cereal/archives/binary.hpp>
 #include <cereal/types/string.hpp>
 #include <cereal/types/vector.hpp>
@@ -65,7 +67,7 @@ inline void push_style_color(ImGuiCol idx, const ImVec4& col, bool fading_out, f
 
 void write_used_binary(const std::vector<std::string>& ids)
 {
-	boost::filesystem::ofstream file((boost::filesystem::path(data_dir()) / "cache" / "hints.cereal"), std::ios::binary);
+	boost::nowide::ofstream file((boost::filesystem::path(data_dir()) / "cache" / "hints.cereal").string(), std::ios::binary);
 	cereal::BinaryOutputArchive archive(file);
 		HintsCerealData cd { ids };
 	try
@@ -84,7 +86,7 @@ void read_used_binary(std::vector<std::string>& ids)
 		BOOST_LOG_TRIVIAL(warning) << "Failed to load to hints.cereal. File does not exists. " << path.string();
 		return;
 	}
-	boost::filesystem::ifstream file(path);
+	boost::nowide::ifstream file(path.string());
 	cereal::BinaryInputArchive archive(file);
 	HintsCerealData cd;
 	try
diff --git a/tests/fff_print/test_data.cpp b/tests/fff_print/test_data.cpp
index 32e31c264c..f7077007db 100644
--- a/tests/fff_print/test_data.cpp
+++ b/tests/fff_print/test_data.cpp
@@ -11,6 +11,7 @@
 #include <string>
 
 #include <boost/nowide/cstdio.hpp>
+#include <boost/nowide/fstream.hpp>
 #include <boost/filesystem.hpp>
 #include <libslic3r/ModelArrange.hpp>
 
@@ -286,7 +287,7 @@ std::string gcode(Print & print)
     print.set_status_silent();
     print.process();
     print.export_gcode(temp.string(), nullptr, nullptr);
-    std::ifstream t(temp.string());
+    boost::nowide::ifstream t(temp.string());
 	std::string str((std::istreambuf_iterator<char>(t)), std::istreambuf_iterator<char>());
 	boost::nowide::remove(temp.string().c_str());
 	return str;