diff --git a/frontend/src/features/layout-designer/components/AddFloorModal.tsx b/frontend/src/features/layout-designer/components/AddFloorModal.tsx
index dcca875..294e958 100644
--- a/frontend/src/features/layout-designer/components/AddFloorModal.tsx
+++ b/frontend/src/features/layout-designer/components/AddFloorModal.tsx
@@ -11,7 +11,14 @@ interface AddFloorModalProps {
 
 export function AddFloorModal({ isOpen, onClose, buildingId, onCreated }: AddFloorModalProps) {
     const [loading, setLoading] = useState(false);
-    const [formData, setFormData] = useState({
+    const [formData, setFormData] = useState<{
+        name: string;
+        number: number;
+        width: number;
+        height: number;
+        ceilingHeight?: number;
+        defaultTiers: number;
+    }>({
         name: '',
         number: 1,
         width: 100,