diff --git a/components/org.wso2.carbon.identity.password.expiry/src/main/java/org/wso2/carbon/identity/password/expiry/util/PasswordPolicyUtils.java b/components/org.wso2.carbon.identity.password.expiry/src/main/java/org/wso2/carbon/identity/password/expiry/util/PasswordPolicyUtils.java
index 6d1a99866..ca12272a6 100644
--- a/components/org.wso2.carbon.identity.password.expiry/src/main/java/org/wso2/carbon/identity/password/expiry/util/PasswordPolicyUtils.java
+++ b/components/org.wso2.carbon.identity.password.expiry/src/main/java/org/wso2/carbon/identity/password/expiry/util/PasswordPolicyUtils.java
@@ -54,6 +54,7 @@
 import java.util.EnumMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.Set;
 import java.util.stream.Collectors;
@@ -463,7 +464,7 @@ private static Set<String> getUserGroupIds(String userId, UserStoreManager userS
             List<Group> userGroups =
                     ((AbstractUserStoreManager) userStoreManager).getGroupListOfUser(userId,
                             null, null);
-            return userGroups.stream().map(Group::getGroupID).collect(Collectors.toSet());
+            return userGroups.stream().map(Group::getGroupID).filter(Objects::nonNull).collect(Collectors.toSet());
         } catch (UserStoreException e) {
                 throw new PostAuthenticationFailedException(PasswordPolicyConstants.ErrorMessages.
                         ERROR_WHILE_RETRIEVING_USER_GROUPS.getCode(),