diff --git a/src/components/treetable/TreeTableRow.vue b/src/components/treetable/TreeTableRow.vue
index 0b67d69be..f1c06dfc5 100755
--- a/src/components/treetable/TreeTableRow.vue
+++ b/src/components/treetable/TreeTableRow.vue
@@ -1,6 +1,6 @@
 <template>
     <tr :class="containerClass" @click="onClick" @keydown="onKeyDown" @touchend="onTouchEnd" :style="node.style" tabindex="0">
-        <td v-for="(col,i) of columns" :key="col.columnKey||col.field||i" :style="col.bodyStyle" :class="col.bodyClass">
+        <td v-for="(col,i) of columns" :key="node.key + '_' + col.columnKey||col.field||i" :style="col.bodyStyle" :class="col.bodyClass">
             <button type="button" class="p-treetable-toggler p-link" @click="toggle" v-if="col.expander" :style="togglerStyle" tabindex="-1" v-ripple>
                 <i :class="togglerIcon"></i>
             </button>