diff --git a/libs/libnx/nxtk/nxtk_opentoolbar.c b/libs/libnx/nxtk/nxtk_opentoolbar.c
index 33ccdb4d072..5d00f37659d 100644
--- a/libs/libnx/nxtk/nxtk_opentoolbar.c
+++ b/libs/libnx/nxtk/nxtk_opentoolbar.c
@@ -78,7 +78,7 @@ int nxtk_opentoolbar(NXTKWINDOW hfwnd, nxgl_coord_t height,
     (FAR struct nxtk_framedwindow_s *)hfwnd;
 
 #ifdef CONFIG_DEBUG_FEATURES
-  if (hfwnd == NULL || cb == NULL)
+  if (hfwnd == NULL || cb == NULL || height < 1)
     {
       set_errno(EINVAL);
       return ERROR;