diff --git a/src/slic3r/GUI/Widgets/ComboBox.cpp b/src/slic3r/GUI/Widgets/ComboBox.cpp
index 919ec029cb..400033fb21 100644
--- a/src/slic3r/GUI/Widgets/ComboBox.cpp
+++ b/src/slic3r/GUI/Widgets/ComboBox.cpp
@@ -192,7 +192,10 @@ bool ComboBox::SetFont(wxFont const& font)
 
 int ComboBox::Append(const wxString &item, const wxBitmap &bitmap, int style)
 {
-    return Append(item, bitmap, nullptr, style);
+    if (bitmap.IsOk()) {
+        return Append(item, bitmap, nullptr, style);
+    }
+    return Append(item, wxNullBitmap, nullptr, style);
 }
 
 int ComboBox::Append(const wxString &text,
@@ -200,7 +203,10 @@ int ComboBox::Append(const wxString &text,
                      void *          clientData,
                      int style)
 {
-    return Append(text, bitmap, wxString{}, clientData, style);
+    if (bitmap.IsOk()) {
+        return Append(text, bitmap, wxString{}, clientData, style);
+    }
+    return Append(text, wxNullBitmap, wxString{}, clientData, style);
 }
 
 int ComboBox::Append(const wxString &text, const wxBitmap &bitmap, const wxString &group, void *clientData, int style)