diff --git a/Makefile b/Makefile
index cc4f181..0dba7b0 100644
--- a/Makefile
+++ b/Makefile
@@ -63,6 +63,7 @@ test: env
 coverage: test
 
 coverage/html: test
+	open algorithm-exercises-java/build/reports/jacoco/test/html/index.html
 
 outdated: