diff --git a/build.xml b/build.xml
index 1bea23f8a79..e2bfe673933 100644
--- a/build.xml
+++ b/build.xml
@@ -30,6 +30,7 @@
         <include name="compiler/backend/src"/>
         <include name="compiler/cli/src"/>
         <include name="compiler/util/src"/>
+        <include name="j2k/src"/>
         <include name="compiler/jet.as.java.psi/src"/>
 
         <include name="runtime/src"/>