diff --git a/routers/web/repo/issue.go b/routers/web/repo/issue.go
index 11d2daeef..5b72ff79a 100644
--- a/routers/web/repo/issue.go
+++ b/routers/web/repo/issue.go
@@ -878,6 +878,11 @@ func DeleteIssue(ctx *context.Context) {
 		return
 	}
 
+	if issue.IsPull {
+		ctx.Redirect(fmt.Sprintf("%s/pulls", ctx.Repo.Repository.HTMLURL()), http.StatusSeeOther)
+		return
+	}
+
 	ctx.Redirect(fmt.Sprintf("%s/issues", ctx.Repo.Repository.HTMLURL()), http.StatusSeeOther)
 }
 
diff --git a/services/issue/issue.go b/services/issue/issue.go
index ded281e20..467bc14b8 100644
--- a/services/issue/issue.go
+++ b/services/issue/issue.go
@@ -149,7 +149,7 @@ func DeleteIssue(doer *user_model.User, gitRepo *git.Repository, issue *issues_m
 
 	// delete pull request related git data
 	if issue.IsPull {
-		if err := gitRepo.RemoveReference(fmt.Sprintf("%s%d", git.PullPrefix, issue.PullRequest.Index)); err != nil {
+		if err := gitRepo.RemoveReference(fmt.Sprintf("%s%d/head", git.PullPrefix, issue.PullRequest.Index)); err != nil {
 			return err
 		}
 	}