diff --git a/src/modules/host/services/host.service.ts b/src/modules/host/services/host.service.ts
index 44b566c..6e3dbac 100644
--- a/src/modules/host/services/host.service.ts
+++ b/src/modules/host/services/host.service.ts
@@ -3337,6 +3337,34 @@ export class HostService {
         throw new ApiError(404, 'Activity not found');
       }
 
+      const normalizedActivityTitle =
+        typeof payload.activityTitle === 'string'
+          ? payload.activityTitle.trim()
+          : '';
+
+      if (normalizedActivityTitle) {
+        payload.activityTitle = normalizedActivityTitle;
+
+        const duplicateActivity = await tx.activities.findFirst({
+          where: {
+            id: { not: existingActivity.id },
+            isActive: true,
+            activityTitle: {
+              equals: normalizedActivityTitle,
+              mode: 'insensitive',
+            },
+          },
+          select: { id: true },
+        });
+
+        if (duplicateActivity) {
+          throw new ApiError(
+            400,
+            'Same activity name already exists. Please choose a different name.',
+          );
+        }
+      }
+
       /* --------------------------------
        * 3️⃣ STATUS DECISION
        * -------------------------------- */