diff --git a/backend/app/api/yield_domains.py b/backend/app/api/yield_domains.py
index 955f921..323af73 100644
--- a/backend/app/api/yield_domains.py
+++ b/backend/app/api/yield_domains.py
@@ -349,7 +349,8 @@ async def activate_domain_for_yield(
             detail="Yield is not available on Scout plan. Upgrade to Trader or Tycoon.",
         )
 
-    max_yield_domains = 5 if tier_value == "trader" else 10_000_000
+    # Yield limits: Trader = 10, Tycoon = unlimited
+    max_yield_domains = 10 if tier_value == "trader" else 10_000_000
     user_domain_count = (
         await db.execute(
             select(func.count(YieldDomain.id)).where(YieldDomain.user_id == current_user.id)