diff --git a/app/src/processing/app/Messages.java b/app/src/processing/app/Messages.java
index 54028a2e5..dd0fce1fc 100644
--- a/app/src/processing/app/Messages.java
+++ b/app/src/processing/app/Messages.java
@@ -328,7 +328,7 @@ public class Messages {
 
   static public void logf(String message, Object... args) {
     if (Base.DEBUG) {
-      System.out.println(String.format(message, args));
+      System.out.printf(message, args);
     }
   }