diff --git a/entrypoint.sh b/entrypoint.sh
index d1ead9a..e12b290 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -2,4 +2,4 @@
 
 # `$*` expands the `args` supplied in an `array` individually 
 # or splits `args` in a string separated by whitespace.
-sh -c "plantuml $*"
+sh -c "java -Djava.awt.headless=true -jar /plantuml.jar $*"