diff --git a/pkgs/drracket-pkgs/drracket/drracket/private/unit.rkt b/pkgs/drracket-pkgs/drracket/drracket/private/unit.rkt
index 2303d3a4cb..9fc9e2784c 100644
--- a/pkgs/drracket-pkgs/drracket/drracket/private/unit.rkt
+++ b/pkgs/drracket-pkgs/drracket/drracket/private/unit.rkt
@@ -4443,7 +4443,7 @@
         
       (super-new
        [filename filename]
-       [style '(toolbar-button)]
+       [style '(toolbar-button fullscreen-button)]
        [size-preferences-key 'drracket:window-size]
        [position-preferences-key 'drracket:window-position])