diff --git a/src/osx/cocoa/textctrl.mm b/src/osx/cocoa/textctrl.mm
index 763e43287f..528ee0b32f 100644
--- a/src/osx/cocoa/textctrl.mm
+++ b/src/osx/cocoa/textctrl.mm
@@ -1339,7 +1339,7 @@ void wxNSTextViewControl::EnableAutomaticDashSubstitution(bool enable)
         [m_textView setAutomaticDashSubstitutionEnabled:enable];
 }
 
-void wxNSTextViewControl::EnableNewLineReplacement(bool enable)
+void wxNSTextViewControl::EnableNewLineReplacement(bool WXUNUSED(enable))
 {
 }