diff --git a/src/main/kotlin/io/gitlab/arturbosch/detekt/idea/DetektAnnotator.kt b/src/main/kotlin/io/gitlab/arturbosch/detekt/idea/DetektAnnotator.kt
index 54be3b2..d05d0da 100644
--- a/src/main/kotlin/io/gitlab/arturbosch/detekt/idea/DetektAnnotator.kt
+++ b/src/main/kotlin/io/gitlab/arturbosch/detekt/idea/DetektAnnotator.kt
@@ -11,8 +11,8 @@ import io.gitlab.arturbosch.detekt.api.TextLocation
 import io.gitlab.arturbosch.detekt.idea.config.DetektConfigStorage
 import io.gitlab.arturbosch.detekt.idea.intention.AutoCorrectIntention
 import io.gitlab.arturbosch.detekt.idea.util.isDetektEnabled
-import io.gitlab.arturbosch.detekt.idea.util.isKotlinFile
 import io.gitlab.arturbosch.detekt.idea.util.showNotification
+import org.jetbrains.kotlin.psi.KtFile
 
 class DetektAnnotator : ExternalAnnotator<PsiFile, List<Finding>>() {
 
@@ -22,7 +22,7 @@ class DetektAnnotator : ExternalAnnotator<PsiFile, List<Finding>>() {
         if (!collectedInfo.project.isDetektEnabled()) {
             return emptyList()
         }
-        if (collectedInfo.isKotlinFile()) {
+        if (collectedInfo !is KtFile) {
             return emptyList()
         }
 
diff --git a/src/main/kotlin/io/gitlab/arturbosch/detekt/idea/util/ProjectUtils.kt b/src/main/kotlin/io/gitlab/arturbosch/detekt/idea/util/ProjectUtils.kt
index 378b093..55cce0b 100644
--- a/src/main/kotlin/io/gitlab/arturbosch/detekt/idea/util/ProjectUtils.kt
+++ b/src/main/kotlin/io/gitlab/arturbosch/detekt/idea/util/ProjectUtils.kt
@@ -7,11 +7,9 @@ import com.intellij.openapi.actionSystem.AnActionEvent
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.options.newEditor.SettingsDialog
 import com.intellij.openapi.project.Project
-import com.intellij.psi.PsiFile
 import io.gitlab.arturbosch.detekt.idea.DETEKT
 import io.gitlab.arturbosch.detekt.idea.config.DetektConfig
 import io.gitlab.arturbosch.detekt.idea.config.DetektConfigStorage
-import org.jetbrains.kotlin.idea.KotlinLanguage
 import java.io.File
 import java.nio.file.Path
 import java.nio.file.Paths
@@ -19,8 +17,6 @@ import java.nio.file.Paths
 fun Project.isDetektEnabled(): Boolean =
     DetektConfigStorage.instance(this).enableDetekt
 
-fun PsiFile.isKotlinFile(): Boolean = language == KotlinLanguage.INSTANCE
-
 fun absolutePath(project: Project, path: String): String =
     if (path.isBlank() || File(path).isAbsolute) {
         path