diff --git a/routers/web/repo/issue.go b/routers/web/repo/issue.go
index 520737809b..b0b4b65331 100644
--- a/routers/web/repo/issue.go
+++ b/routers/web/repo/issue.go
@@ -3160,12 +3160,6 @@ func UpdateCommentContent(ctx *context.Context) {
 
 	oldContent := comment.Content
 	comment.Content = ctx.FormString("content")
-	if len(comment.Content) == 0 {
-		ctx.JSON(http.StatusOK, map[string]any{
-			"content": "",
-		})
-		return
-	}
 	if err = issue_service.UpdateComment(ctx, comment, ctx.Doer, oldContent); err != nil {
 		ctx.ServerError("UpdateComment", err)
 		return
diff --git a/tests/integration/issue_test.go b/tests/integration/issue_test.go
index 84487a847a..49d1cbb016 100644
--- a/tests/integration/issue_test.go
+++ b/tests/integration/issue_test.go
@@ -307,6 +307,16 @@ func TestIssueCommentUpdate(t *testing.T) {
 
 	comment = unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{ID: commentID})
 	assert.Equal(t, modifiedContent, comment.Content)
+
+	// make the comment empty
+	req = NewRequestWithValues(t, "POST", fmt.Sprintf("/%s/%s/comments/%d", "user2", "repo1", commentID), map[string]string{
+		"_csrf":   GetCSRF(t, session, issueURL),
+		"content": "",
+	})
+	session.MakeRequest(t, req, http.StatusOK)
+
+	comment = unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{ID: commentID})
+	assert.Equal(t, "", comment.Content)
 }
 
 func TestIssueReaction(t *testing.T) {