diff --git a/src/slic3r/GUI/WebGuideDialog.cpp b/src/slic3r/GUI/WebGuideDialog.cpp
index 05de4938ea..65a57cce41 100644
--- a/src/slic3r/GUI/WebGuideDialog.cpp
+++ b/src/slic3r/GUI/WebGuideDialog.cpp
@@ -111,7 +111,7 @@ void GuideFrame::load_url(wxString &url)
 {
     BOOST_LOG_TRIVIAL(trace) << "app_start: GuideFrame url=" << url.ToStdString();
     this->Show();
-    m_browser->LoadURL(url);
+    WebView::LoadUrl(m_browser, url);
     m_browser->SetFocus();
     UpdateState();
 }
diff --git a/src/slic3r/GUI/Widgets/WebView.cpp b/src/slic3r/GUI/Widgets/WebView.cpp
index 31378b7139..6bd59c27e5 100644
--- a/src/slic3r/GUI/Widgets/WebView.cpp
+++ b/src/slic3r/GUI/Widgets/WebView.cpp
@@ -98,6 +98,16 @@ wxWebView* WebView::CreateWebView(wxWindow * parent, wxString const & url)
     return webView;
 }
 
+void WebView::LoadUrl(wxWebView * webView, wxString const &url)
+{
+    auto url2  = url;
+#ifdef __WIN32__
+    url2.Replace("\\", "/");
+#endif
+    if (!url2.empty()) { url2 = wxURI(url2).BuildURI(); }
+    webView->LoadURL(url2);
+}
+
 bool WebView::RunScript(wxWebView *webView, wxString const &javascript)
 {
     if (Slic3r::GUI::wxGetApp().get_mode() == Slic3r::comDevelop)
diff --git a/src/slic3r/GUI/Widgets/WebView.hpp b/src/slic3r/GUI/Widgets/WebView.hpp
index 9ca12ccf68..ce142913f0 100644
--- a/src/slic3r/GUI/Widgets/WebView.hpp
+++ b/src/slic3r/GUI/Widgets/WebView.hpp
@@ -7,6 +7,8 @@ class WebView
 {
 public:
     static wxWebView *CreateWebView(wxWindow *parent, wxString const &url);
+    
+    static void LoadUrl(wxWebView * webView, wxString const &url);
 
     static bool RunScript(wxWebView * webView, wxString const & msg);
 };