diff --git a/build/windows/config.xml b/build/windows/config.xml
index 4605b11be..3e2ff39e7 100755
--- a/build/windows/config.xml
+++ b/build/windows/config.xml
@@ -23,6 +23,7 @@
     <cp>lib/jna-platform.jar</cp>
     <cp>lib/ant.jar</cp>
     <cp>lib/ant-launcher.jar</cp>
+    <cp>lib/flatlaf.jar</cp>
 
     <!-- <cp>%EXEDIR%/java/lib/tools.jar</cp> -->