diff --git a/openid-connect-client/src/test/java/org/mitre/openid/connect/client/service/impl/TestSignedAuthRequestUrlBuilder.java b/openid-connect-client/src/test/java/org/mitre/openid/connect/client/service/impl/TestSignedAuthRequestUrlBuilder.java
index e1caa7838..b27e2b305 100644
--- a/openid-connect-client/src/test/java/org/mitre/openid/connect/client/service/impl/TestSignedAuthRequestUrlBuilder.java
+++ b/openid-connect-client/src/test/java/org/mitre/openid/connect/client/service/impl/TestSignedAuthRequestUrlBuilder.java
@@ -26,12 +26,11 @@ import java.util.Map;
 import org.apache.http.client.utils.URIBuilder;
 import org.junit.Before;
 import org.junit.Test;
-import org.junit.runner.RunWith;
 import org.mitre.jwt.signer.service.impl.DefaultJwtSigningAndValidationService;
 import org.mitre.oauth2.model.RegisteredClient;
 import org.mitre.openid.connect.config.ServerConfiguration;
 import org.mockito.Mockito;
-import org.mockito.runners.MockitoJUnitRunner;
+import org.springframework.security.authentication.AuthenticationServiceException;
 
 import com.google.common.base.Joiner;
 import com.google.common.collect.Maps;
@@ -140,5 +139,13 @@ public class TestSignedAuthRequestUrlBuilder {
 		
 		assertEquals(expected, actual);
 	}
+	
+	@Test(expected = AuthenticationServiceException.class)
+	public void buildAuthRequestUrl_badUri() {
+		
+		Mockito.when(serverConfig.getAuthorizationEndpointUri()).thenReturn("e=mc^2");
+		
+		urlBuilder.buildAuthRequestUrl(serverConfig, clientConfig, "example.com", "", "");
+	}
 
 }