diff --git a/models/helper_environment.go b/models/helper_environment.go
index 0460fc3df50..2095205db31 100644
--- a/models/helper_environment.go
+++ b/models/helper_environment.go
@@ -12,13 +12,13 @@ import (
 
 // PushingEnvironment returns an os environment to allow hooks to work on push
 func PushingEnvironment(doer *User, repo *Repository) []string {
-	return FullPushingEnvironment(doer, doer, repo, 0)
+	return FullPushingEnvironment(doer, doer, repo, repo.Name, 0)
 }
 
 // FullPushingEnvironment returns an os environment to allow hooks to work on push
-func FullPushingEnvironment(author, committer *User, repo *Repository, prID int64) []string {
+func FullPushingEnvironment(author, committer *User, repo *Repository, repoName string, prID int64) []string {
 	isWiki := "false"
-	if strings.HasSuffix(repo.Name, ".wiki") {
+	if strings.HasSuffix(repoName, ".wiki") {
 		isWiki = "true"
 	}
 
@@ -32,7 +32,7 @@ func FullPushingEnvironment(author, committer *User, repo *Repository, prID int6
 		"GIT_AUTHOR_EMAIL="+authorSig.Email,
 		"GIT_COMMITTER_NAME="+committerSig.Name,
 		"GIT_COMMITTER_EMAIL="+committerSig.Email,
-		EnvRepoName+"="+repo.Name,
+		EnvRepoName+"="+repoName,
 		EnvRepoUsername+"="+repo.MustOwnerName(),
 		EnvRepoIsWiki+"="+isWiki,
 		EnvPusherName+"="+committer.Name,
diff --git a/models/wiki.go b/models/wiki.go
index 9ae33863332..d47f58f5a3a 100644
--- a/models/wiki.go
+++ b/models/wiki.go
@@ -217,7 +217,13 @@ func (repo *Repository) updateWikiPage(doer *User, oldWikiName, newWikiName, con
 	if err := git.Push(basePath, git.PushOptions{
 		Remote: "origin",
 		Branch: fmt.Sprintf("%s:%s%s", commitHash.String(), git.BranchPrefix, "master"),
-		Env:    PushingEnvironment(doer, repo),
+		Env: FullPushingEnvironment(
+			doer,
+			doer,
+			repo,
+			repo.Name+".wiki",
+			0,
+		),
 	}); err != nil {
 		log.Error("%v", err)
 		return fmt.Errorf("Push: %v", err)
diff --git a/modules/pull/merge.go b/modules/pull/merge.go
index 3e5721ad72f..ed2fe48379c 100644
--- a/modules/pull/merge.go
+++ b/modules/pull/merge.go
@@ -240,7 +240,13 @@ func Merge(pr *models.PullRequest, doer *models.User, baseGitRepo *git.Repositor
 		headUser = doer
 	}
 
-	env := models.FullPushingEnvironment(headUser, doer, pr.BaseRepo, pr.ID)
+	env := models.FullPushingEnvironment(
+		headUser,
+		doer,
+		pr.BaseRepo,
+		pr.BaseRepo.Name,
+		pr.ID,
+	)
 
 	// Push back to upstream.
 	if err := git.NewCommand("push", "origin", pr.BaseBranch).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, nil, &errbuf); err != nil {