diff --git a/interface/wx/textdlg.h b/interface/wx/textdlg.h
index dc0283dcaf..2abceaebf6 100644
--- a/interface/wx/textdlg.h
+++ b/interface/wx/textdlg.h
@@ -109,9 +109,10 @@ public:
             The default value, which may be the empty string.
         @param style
             A dialog style, specifying the buttons (wxOK, wxCANCEL)
-            and an optional wxCENTRE style. Additionally, wxTextCtrl styles
-            (such as @c wxTE_PASSWORD or @c wxTE_MULTILINE) may be specified
-            here.
+            and an optional wxCENTRE style. Additionally, most wxTextCtrl
+            styles (such as @c wxTE_PASSWORD or @c wxTE_MULTILINE) may be
+            specified here, but @c wxTE_READONLY may not be used, as it doesn't
+            make sense for this dialog, used for text input.
         @param pos
             Dialog position.