diff --git a/lisp/image.el b/lisp/image.el
index 13fdf2f6e4c..9a6c93c04d1 100644
--- a/lisp/image.el
+++ b/lisp/image.el
@@ -263,7 +263,7 @@ The image is automatically split into ROW x COLS slices."
 	  (setq x (+ x dx))))
       (setq x 0.0
 	    y (+ y dy))
-      (insert (propertize "\n" 'line-height 0)))))
+      (insert (propertize "\n" 'line-height t)))))