diff --git a/components/lib/treeselect/BaseTreeSelect.vue b/components/lib/treeselect/BaseTreeSelect.vue
index 75b7860a1..b8ae483dc 100644
--- a/components/lib/treeselect/BaseTreeSelect.vue
+++ b/components/lib/treeselect/BaseTreeSelect.vue
@@ -10,7 +10,7 @@ export default {
         options: Array,
         scrollHeight: {
             type: String,
-            default: '14rem'
+            default: '20rem'
         },
         placeholder: {
             type: String,
diff --git a/components/lib/treeselect/TreeSelect.d.ts b/components/lib/treeselect/TreeSelect.d.ts
index 4f71a7ee6..8d74194d1 100644
--- a/components/lib/treeselect/TreeSelect.d.ts
+++ b/components/lib/treeselect/TreeSelect.d.ts
@@ -174,7 +174,7 @@ export interface TreeSelectProps {
     options?: TreeNode[] | undefined;
     /**
      * Height of the viewport, a scrollbar is defined if height of list exceeds this value.
-     * @defaultValue 14rem
+     * @defaultValue 20rem
      */
     scrollHeight?: string | undefined;
     /**
diff --git a/components/lib/treeselect/style/TreeSelectStyle.js b/components/lib/treeselect/style/TreeSelectStyle.js
index b08e2b8d1..2d3eb007a 100644
--- a/components/lib/treeselect/style/TreeSelectStyle.js
+++ b/components/lib/treeselect/style/TreeSelectStyle.js
@@ -103,6 +103,11 @@ const theme = ({ dt }) => `
     overflow: hidden;
 }
 
+
+.p-treeselect-tree-container {
+    overflow: auto;
+}
+
 .p-treeselect-empty-message {
     padding: ${dt('treeselect.empty.message.padding')};
     background: transparent;