diff --git a/src/compiler.cc b/src/compiler.cc
index b010750..b80b6a6 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -1257,7 +1257,8 @@
     Thread::Current()->ClearException();
   }
 
-  CHECK(klass->IsCompileTimeVerified() || klass->IsErroneous()) << PrettyClass(klass);
+  CHECK(klass->IsCompileTimeVerified() || klass->IsErroneous())
+      << PrettyDescriptor(klass) << ": state=" << klass->GetStatus();
   CHECK(!Thread::Current()->IsExceptionPending()) << PrettyTypeOf(Thread::Current()->GetException());
 }