diff --git a/bin/build-launcher.sh b/bin/build-launcher.sh
index cedb093..f9f7f9b 100755
--- a/bin/build-launcher.sh
+++ b/bin/build-launcher.sh
@@ -2,6 +2,8 @@
 
 basedir=$(dirname $(dirname $(readlink -fm $0)))
 
+source $basedir/bin/java-config.sh
+
 # convert the jar files from an existing I2P build into modules suitable for use with jlink
 $basedir/bin/convert-jars-to-modules.sh