diff --git a/include/wx/richtext/richtextctrl.h b/include/wx/richtext/richtextctrl.h
index 69ef221eb6..0c2988d41b 100644
--- a/include/wx/richtext/richtextctrl.h
+++ b/include/wx/richtext/richtextctrl.h
@@ -510,7 +510,7 @@ public:
 
 // Command handlers
 
-    void Command(wxCommandEvent & event);
+    void Command(wxCommandEvent& event);
     void OnDropFiles(wxDropFilesEvent& event);
 
     void OnCut(wxCommandEvent& event);