diff --git a/jps/jps-plugin/src/org/jetbrains/kotlin/jps/incremental/storage/BasicMap.kt b/jps/jps-plugin/src/org/jetbrains/kotlin/jps/incremental/storage/BasicMap.kt
index 29bf3ae2ec2..db5e3f503d2 100644
--- a/jps/jps-plugin/src/org/jetbrains/kotlin/jps/incremental/storage/BasicMap.kt
+++ b/jps/jps-plugin/src/org/jetbrains/kotlin/jps/incremental/storage/BasicMap.kt
@@ -91,8 +91,8 @@ public abstract class BasicMap<K : Comparable<K>, V>(
 }
 
 public abstract class BasicStringMap<V>(
-        private val storageFile: File,
-        private val valueExternalizer: DataExternalizer<V>
+        storageFile: File,
+        valueExternalizer: DataExternalizer<V>
 ) : BasicMap<String, V>(storageFile, valueExternalizer) {
     override val keyDescriptor: KeyDescriptor<String>
         get() = EnumeratorStringDescriptor()