diff --git a/lisp/gnus/nnir.el b/lisp/gnus/nnir.el
index 9d59a4db0d..8fe7ac8cd0 100644
--- a/lisp/gnus/nnir.el
+++ b/lisp/gnus/nnir.el
@@ -991,6 +991,7 @@ nnir-run-imap
           #'(lambda (group)
             (let (artlist)
               (condition-case ()
+		  (setq group (nnimap-decode-gnus-group group))
                   (when (nnimap-change-group
                          (gnus-group-short-name group) server)
                     (with-current-buffer (nnimap-buffer)