diff --git a/pmd-kotlin/src/main/java/net/sourceforge/pmd/lang/kotlin/ast/UnicodeClasses.java b/pmd-kotlin/src/main/java/net/sourceforge/pmd/lang/kotlin/ast/UnicodeClasses.java
index 14066ae367..20ac904718 100644
--- a/pmd-kotlin/src/main/java/net/sourceforge/pmd/lang/kotlin/ast/UnicodeClasses.java
+++ b/pmd-kotlin/src/main/java/net/sourceforge/pmd/lang/kotlin/ast/UnicodeClasses.java
@@ -1,3 +1,7 @@
+/**
+ * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
+ */
+
 // Generated from net/sourceforge/pmd/lang/kotlin/ast/UnicodeClasses.g4 by ANTLR 4.9.3
 package net.sourceforge.pmd.lang.kotlin.ast;