diff --git a/osc/commandline.py b/osc/commandline.py
index 1b8a43eb..bc031a82 100644
--- a/osc/commandline.py
+++ b/osc/commandline.py
@@ -1246,7 +1246,7 @@ Please submit there instead, or use --nodevelproject to force direct submission.
                 except urllib2.HTTPError, e:
                     if e.code != 400:
                         e.osc_msg = 'Diff not possible'
-                        raise
+                        raise e
                     # backward compatiblity: only a recent api/backend supports the missingok parameter
                     try:
                         print server_diff(conf.config['apiurl'],
diff --git a/osc/core.py b/osc/core.py
index 29153914..8bdcef92 100644
--- a/osc/core.py
+++ b/osc/core.py
@@ -4726,8 +4726,16 @@ def request_interactive_review(apiurl, request):
             if repl == 'i' and request.actions[0].type == 'submit':
                 if tmpfile is None:
                     tmpfile = tempfile.NamedTemporaryFile()
-                    tmpfile.write(server_diff(apiurl, request.actions[0].dst_project, request.actions[0].dst_package, None,
-                                  request.actions[0].src_project, request.actions[0].src_package, request.actions[0].src_rev, True, True))
+                    # backward compatiblity: only a recent api/backend supports the missingok parameter
+                    try:
+                        diff = server_diff(apiurl, request.actions[0].dst_project, request.actions[0].dst_package, None,
+                                           request.actions[0].src_project, request.actions[0].src_package, request.actions[0].src_rev, True, True)
+                    except urllib2.HTTPError, e:
+                        if e.code != 400:
+                            raise e
+                        diff = server_diff(apiurl, request.actions[0].dst_project, request.actions[0].dst_package, None,
+                                           request.actions[0].src_project, request.actions[0].src_package, request.actions[0].src_rev, True, False)
+                    tmpfile.write(diff)
                     tmpfile.flush()
                 pager = os.getenv('EDITOR', default='less')
                 subprocess.call('%s %s' % (pager, tmpfile.name), shell=True)