--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/UnbalancedMonitorsTest.java	Wed Sep 20 15:12:11 2017 +0200
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/UnbalancedMonitorsTest.java	Wed Oct 11 17:11:28 2017 -0700
@@ -89,7 +89,7 @@
             OptionValues options = getInitialOptions();
             StructuredGraph graph = new StructuredGraph.Builder(options, getDebugContext(options)).method(method).build();
             Plugins plugins = new Plugins(new InvocationPlugins());
-            GraphBuilderConfiguration graphBuilderConfig = GraphBuilderConfiguration.getDefault(plugins).withEagerResolving(true);
+            GraphBuilderConfiguration graphBuilderConfig = GraphBuilderConfiguration.getDefault(plugins).withEagerResolving(true).withUnresolvedIsError(true);
             OptimisticOptimizations optimisticOpts = OptimisticOptimizations.NONE;
 
             GraphBuilderPhase.Instance graphBuilder = new GraphBuilderPhase.Instance(getMetaAccess(), getProviders().getStampProvider(), null, null, graphBuilderConfig, optimisticOpts, null);