diff --git a/plugins/generic/users.py b/plugins/generic/users.py
index ac65e55dc..d849e0e99 100644
--- a/plugins/generic/users.py
+++ b/plugins/generic/users.py
@@ -347,7 +347,7 @@ class Users:
         # Set containing the list of DBMS administrators
         areAdmins = set()
 
-        if any(isTechniqueAvailable(_) for _ in (PAYLOAD.TECHNIQUE.UNION, PAYLOAD.TECHNIQUE.ERROR, PAYLOAD.TECHNIQUE.QUERY)) or conf.direct:
+        if not kb.data.cachedUsersPrivileges and any(isTechniqueAvailable(_) for _ in (PAYLOAD.TECHNIQUE.UNION, PAYLOAD.TECHNIQUE.ERROR, PAYLOAD.TECHNIQUE.QUERY)) or conf.direct:
             if Backend.isDbms(DBMS.MYSQL) and not kb.data.has_information_schema:
                 query = rootQuery.inband.query2
                 condition = rootQuery.inband.condition2
@@ -424,9 +424,6 @@ class Users:
 
                                 privileges.add(privilege)
 
-                    if isAdminFromPrivileges(privileges):
-                        areAdmins.add(user)
-
                     if user in kb.data.cachedUsersPrivileges:
                         kb.data.cachedUsersPrivileges[user] = list(privileges.union(kb.data.cachedUsersPrivileges[user]))
                     else:
@@ -564,9 +561,6 @@ class Users:
 
                         privileges.add(privilege)
 
-                    if isAdminFromPrivileges(privileges):
-                        areAdmins.add(user)
-
                     # In MySQL < 5.0 we break the cycle after the first
                     # time we get the user's privileges otherwise we
                     # duplicate the same query
@@ -587,6 +581,10 @@ class Users:
             errMsg += "for the database users"
             raise SqlmapNoneDataException(errMsg)
 
+        for user, privileges in kb.data.cachedUsersPrivileges.items():
+            if isAdminFromPrivileges(privileges):
+                areAdmins.add(user)
+
         return (kb.data.cachedUsersPrivileges, areAdmins)
 
     def getRoles(self, query2=False):