diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -2956,6 +2956,7 @@
                 or self.ui.configbool(b'ui', b'allowemptycommit')
             )
             if not allowemptycommit:
+                ms.reset()
                 return None
 
             if merge and cctx.deleted():
diff --git a/relnotes/next b/relnotes/next
--- a/relnotes/next
+++ b/relnotes/next
@@ -61,6 +61,9 @@
  * `hg debugmergestate` output format changed. Let us know if that is
    causing you problems and we'll roll it back.
 
+ * Resolved merge conflicts are now cleared by `hg commit` even if the
+   working copy has no changes.
+
 
 == Internal API Changes ==
 
diff --git a/tests/test-update-branches.t b/tests/test-update-branches.t
--- a/tests/test-update-branches.t
+++ b/tests/test-update-branches.t
@@ -357,7 +357,6 @@
   nothing changed
   [1]
   $ hg resolve -l
-  R a
 
 Change/delete conflict is not allowed
   $ hg up -qC 3