diff --git a/detekt-core/src/main/kotlin/io/gitlab/arturbosch/detekt/core/tooling/DefaultConfigProvider.kt b/detekt-core/src/main/kotlin/io/gitlab/arturbosch/detekt/core/tooling/DefaultConfigProvider.kt
index 3bddf2f45e4..397f8088d10 100644
--- a/detekt-core/src/main/kotlin/io/gitlab/arturbosch/detekt/core/tooling/DefaultConfigProvider.kt
+++ b/detekt-core/src/main/kotlin/io/gitlab/arturbosch/detekt/core/tooling/DefaultConfigProvider.kt
@@ -32,7 +32,7 @@ class DefaultConfigProvider : DefaultConfigurationProvider {
 private fun configInputStream(extensionsSpec: ExtensionsSpec): InputStream {
     val outputStream = ByteArrayOutputStream()
 
-    requireNotNull(extensionsSpec.javaClass.getSafeResourceAsStream("/default-detekt-config.yml"))
+    requireNotNull(DefaultConfigProvider::class.java.getSafeResourceAsStream("/default-detekt-config.yml"))
         .use { it.copyTo(outputStream) }
 
     ExtensionFacade(extensionsSpec.plugins).pluginLoader