diff --git a/lisp/nnmairix.el b/lisp/nnmairix.el
index 96b40e5..c9446b0 100644
--- a/lisp/nnmairix.el
+++ b/lisp/nnmairix.el
@@ -495,6 +495,9 @@ Other back ends might or might not work.")
 	  (nnml-generate-nov-databases-directory mfolder nil t))
 	(nnmairix-call-backend
 	 "request-scan" folder nnmairix-backend-server)
+	(when (eq nnmairix-backend 'nnimap)
+	  (nnmairix-call-backend
+	   "request-group-scan" folder nnmairix-backend-server))
 	(if (and fast allowfast)
 	    t
 	  (nnmairix-request-group-with-article-number-correction