diff --git a/src/shell.c b/src/shell.c
index 39987d58..1a1cfe83 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -2803,6 +2803,9 @@ show_input_panels(struct wl_listener *listener, void *data)
 	struct input_panel_surface *surface, *next;
 	struct weston_surface *ws;
 
+	if (shell->showing_input_panels)
+		return;
+
 	shell->showing_input_panels = true;
 
 	if (!shell->locked)