diff --git a/plugins/kotlin/fir/src/org/jetbrains/kotlin/idea/fir/extensions/KtCompilerPluginsProviderIdeImpl.kt b/plugins/kotlin/fir/src/org/jetbrains/kotlin/idea/fir/extensions/KtCompilerPluginsProviderIdeImpl.kt
index 07f7533b9f59..7441ac955321 100644
--- a/plugins/kotlin/fir/src/org/jetbrains/kotlin/idea/fir/extensions/KtCompilerPluginsProviderIdeImpl.kt
+++ b/plugins/kotlin/fir/src/org/jetbrains/kotlin/idea/fir/extensions/KtCompilerPluginsProviderIdeImpl.kt
@@ -42,7 +42,6 @@ import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrarAdapter
 import org.jetbrains.kotlin.idea.base.projectStructure.KaSourceModuleKind
 import org.jetbrains.kotlin.idea.base.projectStructure.sourceModuleKind
 import org.jetbrains.kotlin.idea.base.projectStructure.openapiModule
-import org.jetbrains.kotlin.idea.base.util.K1ModeProjectStructureApi
 import org.jetbrains.kotlin.idea.base.util.caching.getChanges
 import org.jetbrains.kotlin.idea.compiler.configuration.KotlinCommonCompilerArgumentsHolder
 import org.jetbrains.kotlin.idea.compiler.configuration.KotlinCompilerSettingsListener
@@ -145,7 +144,6 @@ internal class KtCompilerPluginsProviderIdeImpl(
             .any { it.extensions[extension]?.isNotEmpty() == true }
     }
 
-    @OptIn(K1ModeProjectStructureApi::class)
     private fun computeExtensionStorage(module: KaSourceModule): CompilerPluginRegistrar.ExtensionStorage? {
         val classLoader = pluginsCache?.pluginsClassLoader ?: return null
         val compilerArguments = module.openapiModule.getCompilerArguments()