diff --git a/compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/test/util/KtTestUtil.java b/compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/test/util/KtTestUtil.java
index aa34496bd40..1a20fb645a1 100644
--- a/compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/test/util/KtTestUtil.java
+++ b/compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/test/util/KtTestUtil.java
@@ -159,6 +159,7 @@ public class KtTestUtil {
         return getJdkHome("JDK_17_0", "JDK_17");
     }
 
+    @NotNull
     public static File getJdk21Home() {
         return getJdkHome("JDK_21_0", "JDK_21");
     }