diff --git a/.bra.toml b/.bra.toml
index fe9472159c..cc1df16f0e 100644
--- a/.bra.toml
+++ b/.bra.toml
@@ -13,7 +13,6 @@ watch_dirs = [
 watch_exts = [".go"]
 build_delay = 1500
 cmds = [
-	#["go-bindata", "-o=modules/bindata/bindata.go", "-ignore=\\.DS_Store|README", "-pkg=bindata", "conf/..."],
 	["go", "install", "-tags", "sqlite"],# redis memcache cert pam
 	["go", "build", "-tags", "sqlite"],
 	["./gogs", "web"]
diff --git a/models/repo.go b/models/repo.go
index 9fb5607db7..d0fa7c8fc6 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -272,6 +272,11 @@ func (repo *Repository) IsOwnedBy(userID int64) bool {
 	return repo.OwnerID == userID
 }
 
+// CanBeForked returns true if repository meets the requirements of being forked.
+func (repo *Repository) CanBeForked() bool {
+	return !repo.IsBare && !repo.IsMirror
+}
+
 func (repo *Repository) NextIssueIndex() int64 {
 	return int64(repo.NumIssues+repo.NumPulls) + 1
 }
diff --git a/routers/repo/pull.go b/routers/repo/pull.go
index 19f9f5b8e2..c1eec7cc2f 100644
--- a/routers/repo/pull.go
+++ b/routers/repo/pull.go
@@ -38,9 +38,8 @@ func getForkRepository(ctx *middleware.Context) *models.Repository {
 		return nil
 	}
 
-	// Cannot fork bare repo.
-	if forkRepo.IsBare {
-		ctx.Handle(404, "", nil)
+	if !forkRepo.CanBeForked() {
+		ctx.Handle(404, "getForkRepository", nil)
 		return nil
 	}
 
diff --git a/templates/repo/header.tmpl b/templates/repo/header.tmpl
index d95d9526e7..2f883cd704 100644
--- a/templates/repo/header.tmpl
+++ b/templates/repo/header.tmpl
@@ -29,7 +29,7 @@
 					    {{.NumStars}}
 					  </a>
 					</div>
-					{{if not .IsBare}}
+					{{if .CanBeForked}}
 					<div class="ui labeled button" tabindex="0">
 					  <a class="ui grey button {{if eq .OwnerID $.SignedUserID}}poping up{{end}}" {{if not (eq .OwnerID $.SignedUserID)}}href="{{AppSubUrl}}/repo/fork/{{.ID}}"{{else}} data-content="{{$.i18n.Tr "repo.fork_from_self"}}" data-position="top center" data-variation="tiny"{{end}}>
 					    <i class="icon octicon octicon-repo-forked"></i>{{$.i18n.Tr "repo.fork"}}
diff --git a/templates/repo/header_old.tmpl b/templates/repo/header_old.tmpl
index 0537cc0244..23a3e0888d 100644
--- a/templates/repo/header_old.tmpl
+++ b/templates/repo/header_old.tmpl
@@ -48,7 +48,7 @@
                     </button>
                 </a>
             </li>
-            {{if not .IsBare}}
+            {{if .CanBeForked}}
             <li id="repo-header-fork">
                 <a id="repo-header-fork-btn" {{if or (not $.IsRepositoryAdmin) $.Owner.IsOrganization}}href="{{AppSubUrl}}/repo/fork/{{.ID}}"{{end}}>
                     <button class="btn btn-gray text-bold btn-radius">