diff --git a/src/app/components/treeselect/treeselect.ts b/src/app/components/treeselect/treeselect.ts
index 8fbf0cee626..2c910153090 100755
--- a/src/app/components/treeselect/treeselect.ts
+++ b/src/app/components/treeselect/treeselect.ts
@@ -937,8 +937,8 @@ export class TreeSelect implements AfterContentInit {
     setDisabledState(val: boolean): void {
         setTimeout(() => {
             this.disabled = val;
+            this.cd.markForCheck();
         });
-        this.cd.markForCheck();
     }
 
     containerClass() {