diff --git a/routers/web/repo/issue.go b/routers/web/repo/issue.go
index eaec3b5789..a295a3c903 100644
--- a/routers/web/repo/issue.go
+++ b/routers/web/repo/issue.go
@@ -21,6 +21,7 @@ import (
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unit"
 	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/htmlutil"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/markup/markdown"
 	"code.gitea.io/gitea/modules/optional"
@@ -369,7 +370,7 @@ func UpdateIssueContent(ctx *context.Context) {
 	}
 
 	ctx.JSON(http.StatusOK, map[string]any{
-		"content":        content,
+		"content":        commentContentHTML(ctx, content),
 		"contentVersion": issue.ContentVersion,
 		"attachments":    attachmentsHTML(ctx, issue.Attachments, issue.Content),
 	})
@@ -629,6 +630,13 @@ func updateAttachments(ctx *context.Context, item any, files []string) error {
 	return err
 }
 
+func commentContentHTML(ctx *context.Context, content template.HTML) template.HTML {
+	if strings.TrimSpace(string(content)) == "" {
+		return htmlutil.HTMLFormat(`<span class="no-content">%s</span>`, ctx.Tr("repo.issues.no_content"))
+	}
+	return content
+}
+
 func attachmentsHTML(ctx *context.Context, attachments []*repo_model.Attachment, content string) template.HTML {
 	attachHTML, err := ctx.RenderToHTML(tplAttachment, map[string]any{
 		"ctxData":     ctx.Data,
diff --git a/routers/web/repo/issue_comment.go b/routers/web/repo/issue_comment.go
index a3cb88e76a..7f8cc23a3f 100644
--- a/routers/web/repo/issue_comment.go
+++ b/routers/web/repo/issue_comment.go
@@ -9,7 +9,6 @@ import (
 	"html/template"
 	"net/http"
 	"strconv"
-	"strings"
 
 	git_model "code.gitea.io/gitea/models/git"
 	issues_model "code.gitea.io/gitea/models/issues"
@@ -17,7 +16,6 @@ import (
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/gitrepo"
-	"code.gitea.io/gitea/modules/htmlutil"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/markup/markdown"
 	repo_module "code.gitea.io/gitea/modules/repository"
@@ -291,12 +289,8 @@ func UpdateCommentContent(ctx *context.Context) {
 		}
 	}
 
-	if strings.TrimSpace(string(renderedContent)) == "" {
-		renderedContent = htmlutil.HTMLFormat(`<span class="no-content">%s</span>`, ctx.Tr("repo.issues.no_content"))
-	}
-
 	ctx.JSON(http.StatusOK, map[string]any{
-		"content":        renderedContent,
+		"content":        commentContentHTML(ctx, renderedContent),
 		"contentVersion": comment.ContentVersion,
 		"attachments":    attachmentsHTML(ctx, comment.Attachments, comment.Content),
 	})