diff --git a/tmux.h b/tmux.h
index ad79d79d..f48797dc 100644
--- a/tmux.h
+++ b/tmux.h
@@ -823,14 +823,6 @@ struct window_choose_data {
 	char			*command;
 };
 
-struct window_choose_mode_item {
-	struct window_choose_data	*wcd;
-	char				*name;
-	int				 pos;
-	int				 state;
-#define TREE_EXPANDED 0x1
-};
-
 /* Child window structure. */
 struct input_ctx;
 struct window_pane {
diff --git a/window-choose.c b/window-choose.c
index d4b20bca..2af56e23 100644
--- a/window-choose.c
+++ b/window-choose.c
@@ -60,6 +60,14 @@ const struct window_mode window_choose_mode = {
 	NULL,
 };
 
+struct window_choose_mode_item {
+	struct window_choose_data	*wcd;
+	char				*name;
+	int				 pos;
+	int				 state;
+#define TREE_EXPANDED 0x1
+};
+
 struct window_choose_mode_data {
 	struct screen	        screen;