diff --git a/templates/repo/issue/view_content/pull.tmpl b/templates/repo/issue/view_content/pull.tmpl
index 2d657c74ac..2ea9165ac7 100644
--- a/templates/repo/issue/view_content/pull.tmpl
+++ b/templates/repo/issue/view_content/pull.tmpl
@@ -81,7 +81,7 @@
 					{{ctx.Locale.Tr "repo.pulls.data_broken"}}
 				</div>
 			{{else if .IsPullWorkInProgress}}
-				<div class="item toggle-wip" data-title="{{.Issue.Title}}" data-wip-prefix="{{.WorkInProgressPrefix}}" data-update-url="{{.Issue.Link}}/title">
+				<div class="item toggle-wip" data-title="{{.Issue.Title}}" data-wip-prefixes="{{JsonUtils.EncodeToString .PullRequestWorkInProgressPrefixes}}" data-update-url="{{.Issue.Link}}/title">
 					<div class="item-section-left flex-text-inline tw-flex-1">
 						{{svg "octicon-x"}}
 						{{ctx.Locale.Tr "repo.pulls.cannot_merge_work_in_progress"}}