diff --git a/compiler/fir/tree/build.gradle.kts b/compiler/fir/tree/build.gradle.kts
index f2a608fb727..8a6b4d3d1e1 100644
--- a/compiler/fir/tree/build.gradle.kts
+++ b/compiler/fir/tree/build.gradle.kts
@@ -56,9 +56,3 @@ if (kotlinBuildProperties.isInJpsBuildIdeaSync) {
         this.module.generatedSourceDirs.add(generationRoot)
     }
 }
-
-kotlin {
-    sourceSets.all {
-        languageSettings.enableLanguageFeature("InlineClasses")
-    }
-}
\ No newline at end of file