diff --git a/pmd-java/src/test/kotlin/net/sourceforge/pmd/lang/java/ast/KotlinTestingDsl.kt b/pmd-java/src/test/kotlin/net/sourceforge/pmd/lang/java/ast/KotlinTestingDsl.kt
index a2bd324b06..4d6973b759 100644
--- a/pmd-java/src/test/kotlin/net/sourceforge/pmd/lang/java/ast/KotlinTestingDsl.kt
+++ b/pmd-java/src/test/kotlin/net/sourceforge/pmd/lang/java/ast/KotlinTestingDsl.kt
@@ -79,7 +79,7 @@ fun AbstractFunSpec.parserTest(name: String,
     parserTest(name, listOf(javaVersion), null, assertions)
 }
 
-
+@Deprecated("Only a prototype")
 fun junitParserTest(javaVersion: JavaVersion = JavaVersion.Latest,
                     assertions: ParserTestCtx.() -> Unit) = ParserTestCtx(javaVersion).assertions()