diff --git a/tests/Java.Interop-Tests/Java.Interop/JavaVMFixture.cs b/tests/Java.Interop-Tests/Java.Interop/JavaVMFixture.cs
index e1a816c6b..add4f12a0 100644
--- a/tests/Java.Interop-Tests/Java.Interop/JavaVMFixture.cs
+++ b/tests/Java.Interop-Tests/Java.Interop/JavaVMFixture.cs
@@ -12,6 +12,8 @@ partial class JavaVMFixture {
 
 		static partial void CreateJavaVM ()
 		{
+			Console.Error.WriteLine($"# jonp: 64-bit process? {Environment.Is64BitProcess}");
+			Console.Error.Flush();
 			var c = new TestJVM (
 					jars:           new[]{ "interop-test.jar" },
 					typeMappings:   new Dictionary<string, Type> () {