diff --git a/packages/primeng/src/inputicon/inputicon.spec.ts b/packages/primeng/src/inputicon/inputicon.spec.ts
new file mode 100755
index 00000000000..f8a856d11dc
--- /dev/null
+++ b/packages/primeng/src/inputicon/inputicon.spec.ts
@@ -0,0 +1,36 @@
+import { ComponentRef } from '@angular/core';
+import { TestBed, ComponentFixture } from '@angular/core/testing';
+import { InputIcon } from './inputicon';
+import { NoopAnimationsModule } from '@angular/platform-browser/animations';
+
+describe('InputIcon', () => {
+    let inputIcon: InputIcon;
+    let fixture: ComponentFixture<InputIcon>;
+    let inputIconRef: ComponentRef<InputIcon>;
+
+    beforeEach(() => {
+        TestBed.configureTestingModule({ imports: [NoopAnimationsModule, InputIcon] });
+        fixture = TestBed.createComponent(InputIcon);
+        inputIcon = fixture.componentInstance;
+        inputIconRef = fixture.componentRef;
+    });
+
+    it('should create the component', () => {
+        expect(inputIcon).toBeTruthy();
+    });
+
+    it('should always have the p-inputicon class by default', () => {
+        fixture.detectChanges();
+
+        expect(fixture.nativeElement.classList).toContain('p-inputicon');
+    });
+
+    it('should apply custom classes from styleClass input', () => {
+        inputIconRef.setInput('styleClass', 'custom-class');
+        fixture.detectChanges();
+
+        const inputIconHostElement = fixture.nativeElement;
+        expect(inputIconHostElement.classList).toContain('custom-class');
+        expect(inputIconHostElement.classList).toContain('p-inputicon');
+    });
+});
diff --git a/packages/primeng/src/inputicon/inputicon.ts b/packages/primeng/src/inputicon/inputicon.ts
index 64ea7e6159a..8c990182d23 100755
--- a/packages/primeng/src/inputicon/inputicon.ts
+++ b/packages/primeng/src/inputicon/inputicon.ts
@@ -1,5 +1,4 @@
-import { CommonModule } from '@angular/common';
-import { ChangeDetectionStrategy, Component, HostBinding, inject, Input, NgModule, ViewEncapsulation } from '@angular/core';
+import { ChangeDetectionStrategy, Component, inject, input, NgModule, ViewEncapsulation } from '@angular/core';
 import { SharedModule } from 'primeng/api';
 import { BaseComponent } from 'primeng/basecomponent';
 import { InputIconStyle } from './style/inputiconstyle';
@@ -11,13 +10,13 @@ import { InputIconStyle } from './style/inputiconstyle';
 @Component({
     selector: 'p-inputicon, p-inputIcon',
     standalone: true,
-    imports: [CommonModule, SharedModule],
+    imports: [SharedModule],
     template: `<ng-content></ng-content>`,
     encapsulation: ViewEncapsulation.None,
     changeDetection: ChangeDetectionStrategy.OnPush,
     providers: [InputIconStyle],
     host: {
-        '[class]': 'styleClass',
+        '[class]': 'styleClass()',
         '[class.p-inputicon]': 'true'
     }
 })
@@ -26,11 +25,7 @@ export class InputIcon extends BaseComponent {
      * Style class of the element.
      * @group Props
      */
-    @Input() styleClass: string | undefined;
-
-    @HostBinding('class') get hostClasses(): string {
-        return this.styleClass;
-    }
+    styleClass = input<string>();
 
     _componentStyle = inject(InputIconStyle);
 }