1 files changed, 3 insertions, 1 deletions

diff --git a/lisp/international/isearch-x.el b/lisp/international/isearch-x.el
index abf797788b4..be842d4f101 100644
--- a/lisp/international/isearch-x.el
+++ b/lisp/international/isearch-x.el
@@ -60,6 +60,8 @@
                (concat (isearch-message-prefix) isearch-message)
                nil
                current-input-method))
-    (isearch-process-search-string str str)))
+    (if (and str (> (length str) 0))
+        (isearch-process-search-string str str)
+      (isearch-update))))
 
 ;;; isearch-x.el ends here