diff --git a/mu4e/mu4e-view.el b/mu4e/mu4e-view.el
index b4457121..39232524 100644
--- a/mu4e/mu4e-view.el
+++ b/mu4e/mu4e-view.el
@@ -674,7 +674,7 @@ If the message is not New/Unread, do nothing."
 	  ;; prefixes, starting with 0 for 'no citation'
 	  (beginning-of-line 1)
 	  ;; consider only lines that heuristically look like a citation line...
-	  (when (looking-at "[[:blank:]]*[^[:blank:]]*[[:blank:]]*>")
+	  (when (looking-at "[[:blank:]]*[^[:blank:]\n]*[[:blank:]]*>")
 	    (let* ((level (how-many ">" (line-beginning-position 1)
 			    (line-end-position 1)))
 		    (face