diff --git a/compiler/frontend/serialization/src/org/jetbrains/jet/descriptors/serialization/TypeDeserializer.java b/compiler/frontend/serialization/src/org/jetbrains/jet/descriptors/serialization/TypeDeserializer.java
index 710c5bb66a9..81a993e8e33 100644
--- a/compiler/frontend/serialization/src/org/jetbrains/jet/descriptors/serialization/TypeDeserializer.java
+++ b/compiler/frontend/serialization/src/org/jetbrains/jet/descriptors/serialization/TypeDeserializer.java
@@ -279,8 +279,8 @@ public class TypeDeserializer {
 
         @Override
         public int hashCode() {
-            int result = constructor != null ? constructor.hashCode() : 0;
-            result = 31 * result + arguments.hashCode();
+            int result = getConstructor().hashCode();
+            result = 31 * result + getArguments().hashCode();
             result = 31 * result + (isNullable() ? 1 : 0);
             return result;
         }