diff --git a/src/components/layout/header.tsx b/src/components/layout/header.tsx
index 9e04d23..5628907 100644
--- a/src/components/layout/header.tsx
+++ b/src/components/layout/header.tsx
@@ -183,7 +183,7 @@ function HeaderContent() {
                   <MegaDropdown
                     key={item.id}
                     label={item.label}
-                    items={MEGA_DROPDOWN_DATA[item.dropdownKey!]}
+                    items={MEGA_DROPDOWN_DATA[item.dropdownKey!] ?? []}
                     isOpen={openDropdown === item.id}
                     onToggle={() => setOpenDropdown(openDropdown === item.id ? null : item.id)}
                   />
diff --git a/src/lib/constants.ts b/src/lib/constants.ts
index 6135e93..81b25ce 100644
--- a/src/lib/constants.ts
+++ b/src/lib/constants.ts
@@ -1,7 +1,12 @@
 export {
   COMPANY_INFO,
   NAVIGATION,
+  NAVIGATION_V2,
+  MEGA_DROPDOWN_DATA,
   type NavigationItem,
+  type NavigationItemV2,
+  type MegaDropdownItem,
+  type MegaDropdownData,
   STATS,
   type StatItem,
   SERVICES,
@@ -10,4 +15,8 @@ export {
   type NewsItem,
   type NewsCategory,
   CASES,
+  TEAM_MEMBERS,
+  type TeamMember,
+  METHODOLOGY,
+  type MethodologyPhase,
 } from './constants/index';