diff --git a/packages/primeng/src/tree/tree.ts b/packages/primeng/src/tree/tree.ts
index ffa6abf340..ebfa18a9ee 100755
--- a/packages/primeng/src/tree/tree.ts
+++ b/packages/primeng/src/tree/tree.ts
@@ -70,6 +70,7 @@ import {
             <li
                 [ngClass]="nodeClass"
                 [ngStyle]="{ height: itemSize + 'px' }"
+                [class]="node.styleClass"
                 [style]="node.style"
                 [attr.aria-label]="node.label"
                 [attr.aria-checked]="checked"