diff --git a/trick_source/java/Makefile b/trick_source/java/Makefile
index 886ce504..557c1bb6 100644
--- a/trick_source/java/Makefile
+++ b/trick_source/java/Makefile
@@ -10,7 +10,7 @@ all:
 
 test:
 	@echo "Building java tests..."
-	@${MVN} test --quiet -Dcmake=false -Dmaven.wagon.http.retryHandler.count=15
+	@${MVN} test --quiet -Dcmake=false -Dmaven.wagon.http.retryHandler.count=15 -Djava.awt.headless=true
 
 javadoc:
 	${MVN} javadoc:javadoc