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-rw-r--r--src/xdisp.c2
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)