diff --git a/pf4j/src/main/java/ro/fortsoft/pf4j/DefaultPluginManager.java b/pf4j/src/main/java/ro/fortsoft/pf4j/DefaultPluginManager.java
index fcb839b..013eadf 100644
--- a/pf4j/src/main/java/ro/fortsoft/pf4j/DefaultPluginManager.java
+++ b/pf4j/src/main/java/ro/fortsoft/pf4j/DefaultPluginManager.java
@@ -259,7 +259,7 @@ public class DefaultPluginManager implements PluginManager {
         	String modeAsString = System.getProperty("pf4j.mode", RuntimeMode.DEPLOYMENT.toString());
         	runtimeMode = RuntimeMode.byName(modeAsString);
 
-        	log.info("PF4J runtime mode: '" + runtimeMode + "'");
+        	log.info("PF4J runtime mode is '{}'", runtimeMode);
 
     	}