diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/util/LOGOPrinter.java b/liteflow-core/src/main/java/com/yomahub/liteflow/util/LOGOPrinter.java
index 514af023f..50f4ea2de 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/util/LOGOPrinter.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/util/LOGOPrinter.java
@@ -31,7 +31,8 @@ public class LOGOPrinter {
 	}
 
 	private static String getVersion(){
-		Package pkg = LOGOPrinter.class.getPackage();
-		return (pkg != null) ? pkg.getImplementationVersion() : "DEV";
+		return Optional.ofNullable(LOGOPrinter.class.getPackage())
+				.map(Package::getImplementationVersion)
+				.orElse("DEV");
 	}
 }