diff --git a/management/server/account.go b/management/server/account.go
index dce0a9d81..2ee664a65 100644
--- a/management/server/account.go
+++ b/management/server/account.go
@@ -938,11 +938,10 @@ func (am *DefaultAccountManager) warmupIDPCache() error {
 			if err == nil {
 				data := userData[accountID.Id]
 				if data == nil {
-					data = make([]*idp.UserData, 0)
+					data = make([]*idp.UserData, 0, 1)
 				}
 
 				user.AppMetadata.WTAccountID = accountID.Id
-
 				userData[accountID.Id] = append(data, user)
 			}
 		}