diff --git a/platform/projectModel-impl/resources/META-INF/ProjectModelImpl.xml b/platform/projectModel-impl/resources/META-INF/ProjectModelImpl.xml
index 4f3d12399e63..d8ff3b7938be 100644
--- a/platform/projectModel-impl/resources/META-INF/ProjectModelImpl.xml
+++ b/platform/projectModel-impl/resources/META-INF/ProjectModelImpl.xml
@@ -78,9 +78,6 @@
     <workspaceModel.fileIndexContributor implementation="com.intellij.workspaceModel.core.fileIndex.impl.LibraryRootFileIndexContributor"/>
     <workspaceModel.fileIndexContributor implementation="com.intellij.workspaceModel.core.fileIndex.impl.ExcludedRootFileIndexContributor"/>
     <workspaceModel.fileIndexContributor implementation="com.intellij.workspaceModel.core.fileIndex.impl.UnloadedContentRootFileIndexContributor"/>
-    <registryKey key="platform.projectModel.workspace.model.file.index" defaultValue="true"
-                 description="Use new implementation of ProjectFileIndex based on WorkspaceModel with incremental updates"
-                 restartRequired="true"/>
     <registryKey key="ide.new.project.model.strict.mode.rbs" defaultValue="true" restartRequired="true"
                  description="Enable additional checks after replaceBySource and addDiff"/>
     <registryKey key="ide.workspace.model.assertions.on.update" defaultValue="false" restartRequired="false"
diff --git a/platform/projectModel-impl/src/com/intellij/workspaceModel/core/fileIndex/impl/WorkspaceFileIndexEx.kt b/platform/projectModel-impl/src/com/intellij/workspaceModel/core/fileIndex/impl/WorkspaceFileIndexEx.kt
index 7033cc01050d..30d2f0e9ccc5 100644
--- a/platform/projectModel-impl/src/com/intellij/workspaceModel/core/fileIndex/impl/WorkspaceFileIndexEx.kt
+++ b/platform/projectModel-impl/src/com/intellij/workspaceModel/core/fileIndex/impl/WorkspaceFileIndexEx.kt
@@ -2,7 +2,6 @@
 package com.intellij.workspaceModel.core.fileIndex.impl
 
 import com.intellij.openapi.roots.ContentIteratorEx
-import com.intellij.openapi.util.registry.Registry
 import com.intellij.openapi.vfs.AsyncFileListener
 import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.openapi.vfs.VirtualFileFilter
@@ -83,8 +82,12 @@ interface WorkspaceFileIndexEx : WorkspaceFileIndex {
   fun reset()
 
   companion object {
+    /**
+     * WorkspaceFileIndex is now always enabled. Usages of this constant will be inlined later.
+     */
+    @Suppress("MayBeConstant")
     @JvmField
-    val IS_ENABLED: Boolean = Registry.`is`("platform.projectModel.workspace.model.file.index", true)
+    val IS_ENABLED: Boolean = true
   }
 }