diff --git a/libraries/tools/kdoc/src/test/kotlin/test/kotlin/psiUtilsTest.kt b/libraries/tools/kdoc/src/test/kotlin/test/kotlin/psiUtilsTest.kt
index e413a7e0da8..9c744128f1d 100644
--- a/libraries/tools/kdoc/src/test/kotlin/test/kotlin/psiUtilsTest.kt
+++ b/libraries/tools/kdoc/src/test/kotlin/test/kotlin/psiUtilsTest.kt
@@ -33,7 +33,7 @@ class PsiUtilsTest {
         System.setProperty("java.awt.headless", "true")
 
         val configuration = CompilerConfiguration()
-        configuration.put(JVMConfigurationKeys.CLASSPATH_KEY, array(PathUtil.findRtJar()))
+        configuration.add(JVMConfigurationKeys.CLASSPATH_KEY, PathUtil.findRtJar())
         environment = JetCoreEnvironment(rootDisposable, configuration)
     }