diff --git a/installer/appx/filebot.l4j.ini b/installer/appx/filebot.l4j.ini
index 3dc55623..b0b26021 100644
--- a/installer/appx/filebot.l4j.ini
+++ b/installer/appx/filebot.l4j.ini
@@ -41,6 +41,7 @@
 # disable Java 9 module encapsulation
 --add-opens=java.base/java.lang=ALL-UNNAMED
 --add-opens=java.base/java.lang.invoke=ALL-UNNAMED
+--add-opens=java.base/java.io=ALL-UNNAMED
 
 # support JAVA_OPTS environment variable
 %JAVA_OPTS%