diff --git a/src/xterm.c b/src/xterm.c
index ae3f2d75179..dc33ba75569 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -23847,7 +23847,7 @@ void
 mark_xterm (void)
 {
   Lisp_Object val;
-#ifdef HAVE_XINPUT2
+#if defined HAVE_XINPUT2 || defined USE_TOOLKIT_SCROLL_BARS
   struct x_display_info *dpyinfo;
   int i;
 #endif