diff --git a/polymer/eduke32/build/include/dynamicgtk.h b/polymer/eduke32/build/include/dynamicgtk.h
index e16c5bd9e..fd9ab1f8c 100644
--- a/polymer/eduke32/build/include/dynamicgtk.h
+++ b/polymer/eduke32/build/include/dynamicgtk.h
@@ -388,6 +388,8 @@ void       (*gtk_window_set_title)                (GtkWindow           *window,
 						const gchar         *title);
 void       (*gtk_window_set_type_hint)            (GtkWindow           *window, 
 						GdkWindowTypeHint    hint);
+void       (*gtk_window_set_default)              (GtkWindow           *window,
+						GtkWidget           *default_widget);
 
     // gunicode.h
 gint   (*g_utf8_collate)     (const gchar *str1,
@@ -614,6 +616,7 @@ void dynamicgtk_uninit(void);
 #define gtk_window_set_resizable dynamicgtksyms.gtk_window_set_resizable
 #define gtk_window_set_title dynamicgtksyms.gtk_window_set_title
 #define gtk_window_set_type_hint dynamicgtksyms.gtk_window_set_type_hint
+#define gtk_window_set_default dynamicgtksyms.gtk_window_set_default
 
 // gunicode.h
 #define g_utf8_collate dynamicgtksyms.g_utf8_collate
diff --git a/polymer/eduke32/build/src/dynamicgtk.c b/polymer/eduke32/build/src/dynamicgtk.c
index 82d213998..c8df161a7 100644
--- a/polymer/eduke32/build/src/dynamicgtk.c
+++ b/polymer/eduke32/build/src/dynamicgtk.c
@@ -159,6 +159,7 @@ int32_t dynamicgtk_init(void)
         GETDLSYM(gtk_window_set_resizable)
         GETDLSYM(gtk_window_set_title)
         GETDLSYM(gtk_window_set_type_hint)
+        GETDLSYM(gtk_window_set_default)
         GETDLSYM(g_utf8_collate)
     }
     while (0);
diff --git a/polymer/eduke32/source/startgtk.game.c b/polymer/eduke32/source/startgtk.game.c
index 4ecf60faf..680e656ea 100644
--- a/polymer/eduke32/source/startgtk.game.c
+++ b/polymer/eduke32/source/startgtk.game.c
@@ -691,6 +691,8 @@ static GtkWidget *create_window(void)
     gtk_container_add(GTK_CONTAINER(stwidgets.buttons), stwidgets.startbutton);
     GTK_WIDGET_SET_FLAGS(stwidgets.startbutton, GTK_CAN_DEFAULT);
 
+    gtk_window_set_default(GTK_WINDOW(stwidgets.startwin), stwidgets.startbutton);
+
     stwidgets.startbuttonalign = gtk_alignment_new(0.5, 0.5, 0, 0);
     gtk_container_add(GTK_CONTAINER(stwidgets.startbutton), stwidgets.startbuttonalign);