diff --git a/platform/util/src/com/intellij/util/indexing/impl/MapIndexStorage.java b/platform/util/src/com/intellij/util/indexing/impl/MapIndexStorage.java
index ff0a411175a8..3d32084031b0 100644
--- a/platform/util/src/com/intellij/util/indexing/impl/MapIndexStorage.java
+++ b/platform/util/src/com/intellij/util/indexing/impl/MapIndexStorage.java
@@ -80,7 +80,12 @@ public abstract class MapIndexStorage<Key, Value> implements IndexStorage<Key, V
       });
     PersistentHashMapValueStorage.CreationTimeOptions.COMPACT_CHUNKS_WITH_VALUE_DESERIALIZATION.set(Boolean.TRUE);
     try {
-      map = new ValueContainerMap<Key, Value>(getStorageFile(), myKeyDescriptor, myDataExternalizer, myKeyIsUniqueForIndexedFile, myReadOnly);
+      map = new ValueContainerMap<Key, Value>(getStorageFile(), myKeyDescriptor, myDataExternalizer, myKeyIsUniqueForIndexedFile) {
+        @Override
+        protected boolean isReadOnly() {
+          return myReadOnly;
+        }
+      };
     } finally {
       PersistentHashMapValueStorage.CreationTimeOptions.EXCEPTIONAL_IO_CANCELLATION.set(null);
       PersistentHashMapValueStorage.CreationTimeOptions.COMPACT_CHUNKS_WITH_VALUE_DESERIALIZATION.set(null);
diff --git a/platform/util/src/com/intellij/util/indexing/impl/ValueContainerMap.java b/platform/util/src/com/intellij/util/indexing/impl/ValueContainerMap.java
index 930954963d77..e0a10df2f213 100644
--- a/platform/util/src/com/intellij/util/indexing/impl/ValueContainerMap.java
+++ b/platform/util/src/com/intellij/util/indexing/impl/ValueContainerMap.java
@@ -29,18 +29,14 @@ import java.io.*;
 class ValueContainerMap<Key, Value> extends PersistentHashMap<Key, UpdatableValueContainer<Value>> {
   @NotNull private final DataExternalizer<Value> myValueExternalizer;
   private final boolean myKeyIsUniqueForIndexedFile;
-  private final boolean myReadOnly;
 
   ValueContainerMap(@NotNull final File file,
                     @NotNull KeyDescriptor<Key> keyKeyDescriptor,
                     @NotNull DataExternalizer<Value> valueExternalizer,
-                    boolean keyIsUniqueForIndexedFile,
-                    boolean readOnly
-                    ) throws IOException {
+                    boolean keyIsUniqueForIndexedFile) throws IOException {
     super(file, keyKeyDescriptor, new ValueContainerExternalizer<Value>(valueExternalizer));
     myValueExternalizer = valueExternalizer;
     myKeyIsUniqueForIndexedFile = keyIsUniqueForIndexedFile;
-    myReadOnly = readOnly;
   }
 
   @NotNull
@@ -71,11 +67,6 @@ class ValueContainerMap<Key, Value> extends PersistentHashMap<Key, UpdatableValu
     }
   }
 
-  @Override
-  protected boolean isReadOnly() {
-    return myReadOnly;
-  }
-
   private static final class ValueContainerExternalizer<T> implements DataExternalizer<UpdatableValueContainer<T>> {
     @NotNull private final DataExternalizer<T> myValueExternalizer;