diff --git a/src/slic3r/GUI/WebViewDialog.cpp b/src/slic3r/GUI/WebViewDialog.cpp
index a800919651..cec3d67631 100644
--- a/src/slic3r/GUI/WebViewDialog.cpp
+++ b/src/slic3r/GUI/WebViewDialog.cpp
@@ -552,6 +552,8 @@ void WebViewPanel::OnNavigationRequest(wxWebViewEvent& evt)
 #ifdef _WIN32
             if (file.StartsWith('/'))
                 file = file.Mid(1);
+            else
+                file = "//" + file; // When file from network location
 #endif
             wxGetApp().plater()->load_files(wxArrayString{1, &file});
             evt.Veto();