diff --git a/idea/idea-analysis/src/org/jetbrains/jet/plugin/caches/resolve/IdeaModuleInfos.kt b/idea/idea-analysis/src/org/jetbrains/jet/plugin/caches/resolve/IdeaModuleInfos.kt
index 1a895413bfb..ad3abe4f757 100644
--- a/idea/idea-analysis/src/org/jetbrains/jet/plugin/caches/resolve/IdeaModuleInfos.kt
+++ b/idea/idea-analysis/src/org/jetbrains/jet/plugin/caches/resolve/IdeaModuleInfos.kt
@@ -107,28 +107,25 @@ private fun ModuleSourceInfo.isTests() = this is ModuleTestSourceInfo
 public fun Module.productionSourceInfo(): ModuleProductionSourceInfo = ModuleProductionSourceInfo(this)
 public fun Module.testSourceInfo(): ModuleTestSourceInfo = ModuleTestSourceInfo(this)
 
-private abstract class ModuleSourceScope(val module: Module) : GlobalSearchScope(module.getProject()) {
+private abstract data class ModuleSourceScope(val module: Module) : GlobalSearchScope(module.getProject()) {
     override fun compare(file1: VirtualFile, file2: VirtualFile) = 0
     override fun isSearchInModuleContent(aModule: Module) = aModule == module
     override fun isSearchInLibraries() = false
+
+    // KT-6206
+    override fun hashCode(): Int = module.hashCode()
 }
 
-private data class ModuleProductionSourceScope(module: Module) : ModuleSourceScope(module) {
+private class ModuleProductionSourceScope(module: Module) : ModuleSourceScope(module) {
     val moduleFileIndex = ModuleRootManager.getInstance(module).getFileIndex()
 
     override fun contains(file: VirtualFile) = moduleFileIndex.isInSourceContent(file) && !moduleFileIndex.isInTestSourceContent(file)
-
-    // KT-6206
-    override fun hashCode(): Int = module.hashCode()
 }
 
-private data class ModuleTestSourceScope(module: Module) : ModuleSourceScope(module) {
+private class ModuleTestSourceScope(module: Module) : ModuleSourceScope(module) {
     val moduleFileIndex = ModuleRootManager.getInstance(module).getFileIndex()
 
     override fun contains(file: VirtualFile) = moduleFileIndex.isInTestSourceContent(file)
-
-    // KT-6206
-    override fun hashCode(): Int = module.hashCode()
 }
 
 public data class LibraryInfo(val project: Project, val library: Library) : IdeaModuleInfo() {