diff --git a/compiler/tests-against-klib/tests/org/jetbrains/kotlin/codegen/ir/AbstractIrCompileKotlinAgainstKlibTest.kt b/compiler/tests-against-klib/tests/org/jetbrains/kotlin/codegen/ir/AbstractIrCompileKotlinAgainstKlibTest.kt
index 2c780b82dda..8afb60e9c67 100644
--- a/compiler/tests-against-klib/tests/org/jetbrains/kotlin/codegen/ir/AbstractIrCompileKotlinAgainstKlibTest.kt
+++ b/compiler/tests-against-klib/tests/org/jetbrains/kotlin/codegen/ir/AbstractIrCompileKotlinAgainstKlibTest.kt
@@ -29,7 +29,7 @@ abstract class AbstractCompileKotlinAgainstKlibTest : AbstractBlackBoxCodegenTes
 
     override fun doMultiFileTest(wholeFile: File, files: List<TestFile>) {
         outputDir = javaSourcesOutputDirectory
-        klibName = Paths.get(outputDir.toString(), wholeFile.name.toString().removeSuffix(".kt")).toString()
+        klibName = Paths.get(outputDir.toString(), wholeFile.name.toString().replace(".kt", ".klib")).toString()
 
         val classpath: MutableList<File> = ArrayList()
         classpath.add(KtTestUtil.getAnnotationsJar())