diff --git a/src/slic3r/GUI/GUI.cpp b/src/slic3r/GUI/GUI.cpp
index 3765eef2c..f4d4c51cb 100644
--- a/src/slic3r/GUI/GUI.cpp
+++ b/src/slic3r/GUI/GUI.cpp
@@ -221,8 +221,10 @@ void change_opt_value(DynamicPrintConfig& config, const t_config_option_key& opt
 
 void show_error(wxWindow* parent, const wxString& message, bool monospaced_font)
 {
-	ErrorDialog msg(parent, message, monospaced_font);
-	msg.ShowModal();
+    wxGetApp().CallAfter([=] {
+        ErrorDialog msg(parent, message, monospaced_font);
+        msg.ShowModal();
+    });
 }
 
 void show_error(wxWindow* parent, const char* message, bool monospaced_font)