diff --git a/lcm-java/lcm-spy.sh b/lcm-java/lcm-spy.sh
index f80ae6bf5..160960eaa 100755
--- a/lcm-java/lcm-spy.sh
+++ b/lcm-java/lcm-spy.sh
@@ -12,4 +12,4 @@ else
   exit 1
 fi
 
-exec java -server -Djava.net.preferIPv4Stack=true -Xincgc -Xmx128m -Xms64m -ea -cp $jardir/lcm.jar lcm.spy.Spy "$@"
+exec java -server -Djava.net.preferIPv4Stack=true -Xincgc -Xmx128m -Xms64m -ea -cp $jardir/lcm.jar:$jardir/jchart2d-3.2.2.jar lcm.spy.Spy "$@"