diff --git a/src/main/java/eu/openanalytics/containerproxy/auth/impl/OpenIDAuthenticationBackend.java b/src/main/java/eu/openanalytics/containerproxy/auth/impl/OpenIDAuthenticationBackend.java
index 6704e900..e7846f7b 100644
--- a/src/main/java/eu/openanalytics/containerproxy/auth/impl/OpenIDAuthenticationBackend.java
+++ b/src/main/java/eu/openanalytics/containerproxy/auth/impl/OpenIDAuthenticationBackend.java
@@ -56,6 +56,8 @@
 import org.springframework.security.oauth2.client.web.OAuth2AuthorizationRequestRedirectFilter;
 import org.springframework.security.oauth2.core.AuthorizationGrantType;
 import org.springframework.security.oauth2.core.OAuth2AuthenticationException;
+import org.springframework.security.oauth2.core.OAuth2Error;
+import org.springframework.security.oauth2.core.OAuth2ErrorCodes;
 import org.springframework.security.oauth2.core.oidc.OidcIdToken;
 import org.springframework.security.oauth2.core.oidc.OidcUserInfo;
 import org.springframework.security.oauth2.core.oidc.user.DefaultOidcUser;
@@ -122,7 +124,6 @@ public void onAuthenticationFailure(HttpServletRequest request, HttpServletRespo
 				.userInfoEndpoint()
 					.userAuthoritiesMapper(createAuthoritiesMapper())
 					.oidcUserService(createOidcUserService());
-
 	}
 
 	@Override
@@ -246,7 +247,12 @@ protected OidcUserService createOidcUserService() {
 		return new OidcUserService() {
 			@Override
 			public OidcUser loadUser(OidcUserRequest userRequest) throws OAuth2AuthenticationException {
-				OidcUser user = super.loadUser(userRequest);
+			    OidcUser user;
+				try {
+					user = super.loadUser(userRequest);
+				} catch (IllegalArgumentException ex) {
+					throw new OAuth2AuthenticationException(new OAuth2Error(OAuth2ErrorCodes.INVALID_REQUEST), "Error while loading user info", ex);
+				}
 				String nameAttributeKey = environment.getProperty("proxy.openid.username-attribute", "email");
 				return new CustomNameOidcUser(new HashSet<>(user.getAuthorities()), user.getIdToken(), user.getUserInfo(), nameAttributeKey);
 			}