1 files changed, 1 insertions, 1 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 984980324b0..c0caaf4daf2 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -9723,7 +9723,7 @@ redisplay_tool_bar (f)
         border = 0;
 
       rows = f->n_tool_bar_rows;
-      height = (it.last_visible_y - border) / rows;
+      height = max (1, (it.last_visible_y - border) / rows);
       extra = it.last_visible_y - border - height * rows;
 
       while (it.current_y < it.last_visible_y)