diff --git a/runtime/class_linker.cc b/runtime/class_linker.cc
index 6421955..504d860 100644
--- a/runtime/class_linker.cc
+++ b/runtime/class_linker.cc
@@ -4489,7 +4489,8 @@
     }
     self->AllowThreadSuspension();
 
-    CHECK_EQ(klass->GetStatus(), mirror::Class::kStatusVerified) << PrettyClass(klass.Get());
+    CHECK_EQ(klass->GetStatus(), mirror::Class::kStatusVerified) << PrettyClass(klass.Get())
+        << " self.tid=" << self->GetTid() << " clinit.tid=" << klass->GetClinitThreadId();
 
     // From here out other threads may observe that we're initializing and so changes of state
     // require the a notification.