diff --git a/git-codereview/branch.go b/git-codereview/branch.go
index 37da5fa..c9b21a0 100644
--- a/git-codereview/branch.go
+++ b/git-codereview/branch.go
@@ -402,6 +402,10 @@
 			// (git rev-parse --abbrev-ref HEAD returns 'HEAD').
 			s = current.Name
 		}
+		// + marks a branch checked out in a worktree. Worktrees in detached
+		// HEAD mode don't appear in the "git branch" output, so this is always
+		// a normal name.
+		s = strings.TrimPrefix(s, "+ ")
 		branches = append(branches, &Branch{Name: s})
 	}
 	return branches
diff --git a/git-codereview/branch_test.go b/git-codereview/branch_test.go
index d7db6ee..2ac3c03 100644
--- a/git-codereview/branch_test.go
+++ b/git-codereview/branch_test.go
@@ -5,6 +5,7 @@
 package main
 
 import (
+	"path/filepath"
 	"reflect"
 	"strings"
 	"testing"
@@ -83,6 +84,11 @@
 	t.Logf("detached head mode")
 	trun(t, gt.client, "git", "checkout", "HEAD^0")
 	checkLocalBranches(t, "HEAD", "main", "newbranch")
+
+	t.Logf("worktree")
+	wt := filepath.Join(gt.tmpdir, "git-worktree")
+	trun(t, gt.client, "git", "worktree", "add", "-b", "wtbranch", wt)
+	checkLocalBranches(t, "HEAD", "main", "newbranch", "wtbranch")
 }
 
 func checkLocalBranches(t *testing.T, want ...string) {