diff --git a/Makefile b/Makefile
index 13fb1ae..2afdd34 100644
--- a/Makefile
+++ b/Makefile
@@ -216,7 +216,7 @@ clean:
 	rm -rf docs
 
 # Génération du fichier .jar
-jar:
+jar: ${PACKAGE}/Main.class
 	jar cvfm ${JARNAME} Manifest.MF -C build/ . -C libs/ . ./ressources
 
 # Documentation JavaDoc