diff --git a/compiler/frontend/serialization/src/org/jetbrains/jet/descriptors/serialization/descriptors/DeserializedClassDescriptor.java b/compiler/frontend/serialization/src/org/jetbrains/jet/descriptors/serialization/descriptors/DeserializedClassDescriptor.java
index 8162c187ee5..0d54bd0a9d5 100644
--- a/compiler/frontend/serialization/src/org/jetbrains/jet/descriptors/serialization/descriptors/DeserializedClassDescriptor.java
+++ b/compiler/frontend/serialization/src/org/jetbrains/jet/descriptors/serialization/descriptors/DeserializedClassDescriptor.java
@@ -245,6 +245,11 @@ public class DeserializedClassDescriptor extends ClassDescriptorBase implements
         return supertypes;
     }
 
+    @Override
+    public String toString() {
+        return "deserialized class " + getName().toString();
+    }
+
     private class DeserializedClassTypeConstructor implements TypeConstructor {
         private final Collection<JetType> supertypes = computeSuperTypes();
         private final List<TypeParameterDescriptor> parameters = deserializer.typeParameters(classProto.getTypeParametersList());