diff --git a/yasnippet.el b/yasnippet.el
index 706c86a..50973e9 100644
--- a/yasnippet.el
+++ b/yasnippet.el
@@ -4015,8 +4015,9 @@ with their evaluated value into `yas--backquote-markers-and-strings'."
 
 (defun yas--scan-sexps (from count)
   (ignore-errors
-    (with-syntax-table (standard-syntax-table)
-      (scan-sexps from count))))
+    (save-match-data ; `scan-sexps' may modify match data.
+      (with-syntax-table (standard-syntax-table)
+        (scan-sexps from count)))))
 
 (defun yas--make-marker (pos)
   "Create a marker at POS with nil `marker-insertion-type'."