diff --git a/include/wx/gtk/combobox.h b/include/wx/gtk/combobox.h
index 0c4240bd0c..2fc432ae5d 100644
--- a/include/wx/gtk/combobox.h
+++ b/include/wx/gtk/combobox.h
@@ -94,11 +94,7 @@ public:
     virtual void Popup();
     virtual void Dismiss();
 
-    virtual void Clear() wxOVERRIDE
-    {
-        wxTextEntry::Clear();
-        wxItemContainer::Clear();
-    }
+    virtual void Clear() wxOVERRIDE;
 
     // See wxComboBoxBase discussion of IsEmpty().
     bool IsListEmpty() const { return wxItemContainer::IsEmpty(); }
diff --git a/src/gtk/combobox.cpp b/src/gtk/combobox.cpp
index 7813ab40c3..d507865f53 100644
--- a/src/gtk/combobox.cpp
+++ b/src/gtk/combobox.cpp
@@ -295,6 +295,12 @@ wxComboBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 #endif
 }
 
+void wxComboBox::Clear()
+{
+    wxTextEntry::Clear();
+    wxItemContainer::Clear();
+}
+
 void wxComboBox::SetValue(const wxString& value)
 {
     if ( HasFlag(wxCB_READONLY) )