diff --git a/hgext/patchbomb.py b/hgext/patchbomb.py
--- a/hgext/patchbomb.py
+++ b/hgext/patchbomb.py
@@ -230,6 +230,7 @@ def patchbomb(ui, repo, *revs, **opts):
     def outgoing(dest, revs):
         '''Return the revisions present locally but not in dest'''
         dest = ui.expandpath(dest or 'default-push', dest or 'default')
+        dest, revs, checkout = hg.parseurl(dest, revs)
         revs = [repo.lookup(rev) for rev in revs]
         other = hg.repository(cmdutil.remoteui(repo, opts), dest)
         ui.status(_('comparing with %s\n') % dest)
diff --git a/tests/test-patchbomb b/tests/test-patchbomb
--- a/tests/test-patchbomb
+++ b/tests/test-patchbomb
@@ -182,3 +182,11 @@ export HGENCODING
 hg email --date '1980-1-1 0:1' -m tmp.mbox -f quux -t "bar@${UUML}nicode.com" \
   -s test -r 0
 cat tmp.mbox | fixheaders
+
+echo "% test outgoing and dest#branch URIs"
+hg up 1
+hg branch test
+echo d > d
+hg add d
+hg ci -md -d '4 0'
+hg email --date '1980-1-1 0:1' -n -t foo -s test -o ../t#test | fixheaders
diff --git a/tests/test-patchbomb.out b/tests/test-patchbomb.out
--- a/tests/test-patchbomb.out
+++ b/tests/test-patchbomb.out
@@ -1533,3 +1533,38 @@ diff -r 000000000000 -r 8580ff50825a a
 +a
 
 
+% test outgoing and dest#branch URIs
+0 files updated, 0 files merged, 6 files removed, 0 files unresolved
+marked working directory as branch test
+created new head
+comparing with ../t
+searching for changes
+This patch series consists of 1 patches.
+
+
+Displaying [PATCH] test ...
+Content-Type: text/plain; charset="us-ascii"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [PATCH] test
+X-Mercurial-Node: 2f9fa9b998c5fe3ac2bd9a2b14bfcbeecbc7c268
+Message-Id: <2f9fa9b998c5fe3ac2bd.315532860@
+User-Agent: Mercurial-patchbomb
+Date: Tue, 01 Jan 1980 00:01:00 +0000
+From: test
+To: foo
+
+# HG changeset patch
+# User test
+# Date 4 0
+# Branch test
+# Node ID 2f9fa9b998c5fe3ac2bd9a2b14bfcbeecbc7c268
+# Parent  97d72e5f12c7e84f85064aa72e5a297142c36ed9
+d
+
+diff -r 97d72e5f12c7 -r 2f9fa9b998c5 d
+--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
++++ b/d	Thu Jan 01 00:00:04 1970 +0000
+@@ -0,0 +1,1 @@
++d
+